126643560 has 32 divisors (see below), whose sum is σ = 379931040. Its totient is φ = 33771584.

The previous prime is 126643537. The next prime is 126643567. The reversal of 126643560 is 65346621.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (126643567) 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, 527562 + ... + 527801.

It is an arithmetic number, because the mean of its divisors is an integer number (11872845).

Almost surely, 2^126643560 is an apocalyptic number.

126643560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126643560 is an abundant number, since it is smaller than the sum of its proper divisors (253287480).

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

126643560 is a wasteful number, since it uses less digits than its factorization.

126643560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055377 (or 1055373 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 126643560 is about 11253.6020899977. The cubic root of 126643560 is about 502.1818782981.

The spelling of 126643560 in words is "one hundred twenty-six million, six hundred forty-three thousand, five hundred sixty".