126489645 has 12 divisors (see below), whose sum is σ = 219248796. Its totient is φ = 67461120.

The previous prime is 126489637. The next prime is 126489653. The reversal of 126489645 is 546984621.

126489645 is a `hidden beast` number, since 126 + 489 + 6 + 45 = 666.

It is an interprime number because it is at equal distance from previous prime (126489637) and next prime (126489653).

It can be written as a sum of positive squares in 2 ways, for example, as 13003236 + 113486409 = 3606^2 + 10653^2 .

It is not a de Polignac number, because 126489645 - 2³ = 126489637 is a prime.

It is a super-3 number, since 3×126489645³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 2810881 = 126489645 / (1 + 2 + 6 + 4 + 8 + 9 + 6 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 126489645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1405396 + ... + 1405485.

It is an arithmetic number, because the mean of its divisors is an integer number (18270733).

Almost surely, 2^126489645 is an apocalyptic number.

126489645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126489645 is a deficient number, since it is larger than the sum of its proper divisors (92759151).

126489645 is a wasteful number, since it uses less digits than its factorization.

126489645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2810892 (or 2810889 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 126489645 is about 11246.7615338817. The cubic root of 126489645 is about 501.9783552304.

It can be divided in two parts, 1264 and 89645, that added together give a palindrome (90909).

The spelling of 126489645 in words is "one hundred twenty-six million, four hundred eighty-nine thousand, six hundred forty-five".