126640870 has 16 divisors (see below), whose sum is σ = 230212368. Its totient is φ = 50154400.

The previous prime is 126640867. The next prime is 126640901. The reversal of 126640870 is 78046621.

It is a congruent number.

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, 61684 + ... + 63703.

It is an arithmetic number, because the mean of its divisors is an integer number (14388273).

Almost surely, 2^126640870 is an apocalyptic number.

126640870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126640870 is a deficient number, since it is larger than the sum of its proper divisors (103571498).

126640870 is a wasteful number, since it uses less digits than its factorization.

126640870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125495.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 126640870 is about 11253.4825720752. The cubic root of 126640870 is about 502.1783227053.

The spelling of 126640870 in words is "one hundred twenty-six million, six hundred forty thousand, eight hundred seventy".