126869808442 has 16 divisors (see below), whose sum is σ = 204972584040. Its totient is φ = 58546996992.

The previous prime is 126869808431. The next prime is 126869808503. The reversal of 126869808442 is 244808968621.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 62946293881 + 63923514561 = 250891^2 + 252831^2 .

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, 156883 + ... + 527590.

Almost surely, 2^126869808442 is an apocalyptic number.

126869808442 is a deficient number, since it is larger than the sum of its proper divisors (78102775598).

126869808442 is a wasteful number, since it uses less digits than its factorization.

126869808442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691617.

The product of its (nonzero) digits is 10616832, while the sum is 58.

The spelling of 126869808442 in words is "one hundred twenty-six billion, eight hundred sixty-nine million, eight hundred eight thousand, four hundred forty-two".