126972290 has 16 divisors (see below), whose sum is σ = 229013568. Its totient is φ = 50685936.

The previous prime is 126972289. The next prime is 126972317. The reversal of 126972290 is 92279621.

It is a super-2 number, since 2×126972290² = 32243924855688200, which 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, 7592 + ... + 17651.

It is an arithmetic number, because the mean of its divisors is an integer number (14313348).

Almost surely, 2^126972290 is an apocalyptic number.

126972290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126972290 is a deficient number, since it is larger than the sum of its proper divisors (102041278).

126972290 is a wasteful number, since it uses less digits than its factorization.

126972290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25753.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 126972290 is about 11268.1981700714. The cubic root of 126972290 is about 502.6160091223.

The spelling of 126972290 in words is "one hundred twenty-six million, nine hundred seventy-two thousand, two hundred ninety".