126654438402 has 30 divisors (see below), whose sum is σ = 283809910329. Its totient is φ = 42216636240.

The previous prime is 126654438397. The next prime is 126654438431. The reversal of 126654438402 is 204834456621.

126654438402 is a `hidden beast` number, since 1 + 2 + 66 + 544 + 3 + 8 + 40 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 116908602561 + 9745835841 = 341919^2 + 98721^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=251649.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 4515702 + ... + 4543662.

Almost surely, 2^126654438402 is an apocalyptic number.

126654438402 is an abundant number, since it is smaller than the sum of its proper divisors (157155471927).

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

126654438402 is an frugal number, since it uses more digits than its factorization.

126654438402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55936 (or 27966 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The spelling of 126654438402 in words is "one hundred twenty-six billion, six hundred fifty-four million, four hundred thirty-eight thousand, four hundred two".