126981570 has 32 divisors (see below), whose sum is σ = 309925440. Its totient is φ = 33287360.

The previous prime is 126981523. The next prime is 126981671. The reversal of 126981570 is 75189621.

It is a super-2 number, since 2×126981570² = 32248638239329800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34101 + ... + 37640.

It is an arithmetic number, because the mean of its divisors is an integer number (9685170).

Almost surely, 2^126981570 is an apocalyptic number.

126981570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126981570 is an abundant number, since it is smaller than the sum of its proper divisors (182943870).

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

126981570 is a wasteful number, since it uses less digits than its factorization.

126981570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71810.

The product of its (nonzero) digits is 30240, while the sum is 39.

The square root of 126981570 is about 11268.6099408933. The cubic root of 126981570 is about 502.6282536914.

The spelling of 126981570 in words is "one hundred twenty-six million, nine hundred eighty-one thousand, five hundred seventy".