126124389 has 6 divisors (see below), whose sum is σ = 182179686. Its totient is φ = 84082920.

The previous prime is 126124381. The next prime is 126124403. The reversal of 126124389 is 983421621.

126124389 is a `hidden beast` number, since 1 + 2 + 612 + 4 + 38 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 115992900 + 10131489 = 10770^2 + 3183^2 .

It is not a de Polignac number, because 126124389 - 2³ = 126124381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126124381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7006902 + ... + 7006919.

It is an arithmetic number, because the mean of its divisors is an integer number (30363281).

Almost surely, 2^126124389 is an apocalyptic number.

It is an amenable number.

126124389 is a deficient number, since it is larger than the sum of its proper divisors (56055297).

126124389 is a wasteful number, since it uses less digits than its factorization.

126124389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14013827 (or 14013824 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 126124389 is about 11230.5115199620. The cubic root of 126124389 is about 501.4947125495.

The spelling of 126124389 in words is "one hundred twenty-six million, one hundred twenty-four thousand, three hundred eighty-nine".