126021313526 has 16 divisors (see below), whose sum is σ = 189279115200. Its totient is φ = 62928317448.

The previous prime is 126021313507. The next prime is 126021313529. The reversal of 126021313526 is 625313120621.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 126021313492 and 126021313501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126021313529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7693421 + ... + 7709783.

It is an arithmetic number, because the mean of its divisors is an integer number (11829944700).

Almost surely, 2^126021313526 is an apocalyptic number.

126021313526 is a deficient number, since it is larger than the sum of its proper divisors (63257801674).

126021313526 is a wasteful number, since it uses less digits than its factorization.

126021313526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21163.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 126021313526 in words is "one hundred twenty-six billion, twenty-one million, three hundred thirteen thousand, five hundred twenty-six".