126437645 has 8 divisors (see below), whose sum is σ = 155426040. Its totient is φ = 98682880.

The previous prime is 126437629. The next prime is 126437671. The reversal of 126437645 is 546734621.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1042441 + 125395204 = 1021^2 + 11198^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 126437645 - 2⁴ = 126437629 is a prime.

It is a super-3 number, since 3×126437645³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 126437599 and 126437608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308180 + ... + 308589.

It is an arithmetic number, because the mean of its divisors is an integer number (19428255).

Almost surely, 2^126437645 is an apocalyptic number.

It is an amenable number.

126437645 is a deficient number, since it is larger than the sum of its proper divisors (28988395).

126437645 is an equidigital number, since it uses as much as digits as its factorization.

126437645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616815.

The product of its digits is 120960, while the sum is 38.

The square root of 126437645 is about 11244.4495196519. The cubic root of 126437645 is about 501.9095578933.

The spelling of 126437645 in words is "one hundred twenty-six million, four hundred thirty-seven thousand, six hundred forty-five".