126890442868 has 12 divisors (see below), whose sum is σ = 253780885792. Its totient is φ = 54381618360.

The previous prime is 126890442839. The next prime is 126890442923. The reversal of 126890442868 is 868244098621.

It is a happy number.

126890442868 is an admirable number.

It is a super-2 number, since 2×126890442868² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2265900738 + ... + 2265900793.

Almost surely, 2^126890442868 is an apocalyptic number.

It is an amenable number.

126890442868 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

126890442868 is a wasteful number, since it uses less digits than its factorization.

126890442868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4531801542 (or 4531801540 counting only the distinct ones).

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

The spelling of 126890442868 in words is "one hundred twenty-six billion, eight hundred ninety million, four hundred forty-two thousand, eight hundred sixty-eight".