126981560 has 32 divisors (see below), whose sum is σ = 300747600. Its totient is φ = 48119040.

The previous prime is 126981523. The next prime is 126981671. The reversal of 126981560 is 65189621.

It is a super-2 number, since 2×126981560² = 32248633160067200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

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, 82781 + ... + 84300.

Almost surely, 2^126981560 is an apocalyptic number.

126981560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126981560 is an abundant number, since it is smaller than the sum of its proper divisors (173766040).

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

126981560 is a wasteful number, since it uses less digits than its factorization.

126981560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167111 (or 167107 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 126981560 is about 11268.6094971829. The cubic root of 126981560 is about 502.6282404972.

The spelling of 126981560 in words is "one hundred twenty-six million, nine hundred eighty-one thousand, five hundred sixty".