126503720 has 32 divisors (see below), whose sum is σ = 325296000. Its totient is φ = 43372608.

The previous prime is 126503719. The next prime is 126503759. The reversal of 126503720 is 27305621.

It is a self number, because there is not a number n which added to its sum of digits gives 126503720.

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, 225620 + ... + 226179.

It is an arithmetic number, because the mean of its divisors is an integer number (10165500).

Almost surely, 2^126503720 is an apocalyptic number.

126503720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126503720 is an abundant number, since it is smaller than the sum of its proper divisors (198792280).

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

126503720 is a wasteful number, since it uses less digits than its factorization.

126503720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451817 (or 451813 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 126503720 is about 11247.3872521577. The cubic root of 126503720 is about 501.9969735748.

The spelling of 126503720 in words is "one hundred twenty-six million, five hundred three thousand, seven hundred twenty".