126804520 has 32 divisors (see below), whose sum is σ = 297717120. Its totient is φ = 48516160.

The previous prime is 126804493. The next prime is 126804521. The reversal of 126804520 is 25408621.

It is not an unprimeable number, because it can be changed into a prime (126804521) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 67996 + ... + 69835.

It is an arithmetic number, because the mean of its divisors is an integer number (9303660).

Almost surely, 2^126804520 is an apocalyptic number.

126804520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126804520 is an abundant number, since it is smaller than the sum of its proper divisors (170912600).

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

126804520 is a wasteful number, since it uses less digits than its factorization.

126804520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137865 (or 137861 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 126804520 is about 11260.7513070843. The cubic root of 126804520 is about 502.3945407097.

The spelling of 126804520 in words is "one hundred twenty-six million, eight hundred four thousand, five hundred twenty".