126857920 has 56 divisors (see below), whose sum is σ = 345240864. Its totient is φ = 43493376.

The previous prime is 126857917. The next prime is 126857971. The reversal of 126857920 is 29758621.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 26077 + ... + 30556.

Almost surely, 2^126857920 is an apocalyptic number.

126857920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126857920 is an abundant number, since it is smaller than the sum of its proper divisors (218382944).

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

126857920 is an equidigital number, since it uses as much as digits as its factorization.

126857920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56657 (or 56647 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 126857920 is about 11263.1221248817. The cubic root of 126857920 is about 502.4650537152.

The spelling of 126857920 in words is "one hundred twenty-six million, eight hundred fifty-seven thousand, nine hundred twenty".