126391507434 has 32 divisors (see below), whose sum is σ = 280977984000. Its totient is φ = 42114307392.

The previous prime is 126391507427. The next prime is 126391507439. The reversal of 126391507434 is 434705193621.

126391507434 is a `hidden beast` number, since 1 + 2 + 63 + 9 + 150 + 7 + 434 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 126391507434.

It is not an unprimeable number, because it can be changed into a prime (126391507439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307674 + ... + 589445.

It is an arithmetic number, because the mean of its divisors is an integer number (8780562000).

Almost surely, 2^126391507434 is an apocalyptic number.

126391507434 is an abundant number, since it is smaller than the sum of its proper divisors (154586476566).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126391507434 is a wasteful number, since it uses less digits than its factorization.

126391507434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899739 (or 899733 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 126391507434 in words is "one hundred twenty-six billion, three hundred ninety-one million, five hundred seven thousand, four hundred thirty-four".