126972790 has 16 divisors (see below), whose sum is σ = 261201312. Its totient is φ = 43533504.

The previous prime is 126972773. The next prime is 126972799. The reversal of 126972790 is 97279621.

It is a super-2 number, since 2×126972790² = 32244178800768200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126972799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 906879 + ... + 907018.

It is an arithmetic number, because the mean of its divisors is an integer number (16325082).

Almost surely, 2^126972790 is an apocalyptic number.

126972790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126972790 is an abundant number, since it is smaller than the sum of its proper divisors (134228522).

126972790 is a wasteful number, since it uses less digits than its factorization.

126972790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813911.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 126972790 is about 11268.2203563828. The cubic root of 126972790 is about 502.6166688665.

The spelling of 126972790 in words is "one hundred twenty-six million, nine hundred seventy-two thousand, seven hundred ninety".