126901929640 has 32 divisors (see below), whose sum is σ = 286165305000. Its totient is φ = 50647711744.

The previous prime is 126901929631. The next prime is 126901929667. The reversal of 126901929640 is 46929109621.

It can be written as a sum of positive squares in 4 ways, for example, as 120613122436 + 6288807204 = 347294^2 + 79302^2 .

It is a super-2 number, since 2×126901929640² (a number of 23 digits) contains 22 as substring.

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, 3514945 + ... + 3550864.

Almost surely, 2^126901929640 is an apocalyptic number.

126901929640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126901929640 is an abundant number, since it is smaller than the sum of its proper divisors (159263375360).

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

126901929640 is a wasteful number, since it uses less digits than its factorization.

126901929640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7066269 (or 7066265 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 49.

The spelling of 126901929640 in words is "one hundred twenty-six billion, nine hundred one million, nine hundred twenty-nine thousand, six hundred forty".