126555400 has 24 divisors (see below), whose sum is σ = 294241770. Its totient is φ = 50622080.

The previous prime is 126555389. The next prime is 126555421. The reversal of 126555400 is 4555621.

It can be written as a sum of positive squares in 3 ways, for example, as 82119844 + 44435556 = 9062^2 + 6666^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 316189 + ... + 316588.

Almost surely, 2^126555400 is an apocalyptic number.

126555400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126555400 is an abundant number, since it is smaller than the sum of its proper divisors (167686370).

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

126555400 is a wasteful number, since it uses less digits than its factorization.

126555400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632793 (or 632784 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 126555400 is about 11249.6844400188. The cubic root of 126555400 is about 502.0653237955.

It can be divided in two parts, 1265 and 55400, that added together give a palindrome (56665).

The spelling of 126555400 in words is "one hundred twenty-six million, five hundred fifty-five thousand, four hundred".