126013439 has 16 divisors (see below), whose sum is σ = 135475200. Its totient is φ = 116986464.

The previous prime is 126013423. The next prime is 126013441. The reversal of 126013439 is 934310621.

It is not a de Polignac number, because 126013439 - 2⁴ = 126013423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126013039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79634 + ... + 81200.

It is an arithmetic number, because the mean of its divisors is an integer number (8467200).

Almost surely, 2^126013439 is an apocalyptic number.

126013439 is a deficient number, since it is larger than the sum of its proper divisors (9461761).

126013439 is a wasteful number, since it uses less digits than its factorization.

126013439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 126013439 is about 11225.5707649990. The cubic root of 126013439 is about 501.3476165959.

The spelling of 126013439 in words is "one hundred twenty-six million, thirteen thousand, four hundred thirty-nine".