126900555 has 16 divisors (see below), whose sum is σ = 203325984. Its totient is φ = 67585280.

The previous prime is 126900547. The next prime is 126900589. The reversal of 126900555 is 555009621.

It is not a de Polignac number, because 126900555 - 2³ = 126900547 is a prime.

It is a super-2 number, since 2×126900555² = 32207501718616050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5857 + ... + 16973.

It is an arithmetic number, because the mean of its divisors is an integer number (12707874).

Almost surely, 2^126900555 is an apocalyptic number.

126900555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

126900555 is a deficient number, since it is larger than the sum of its proper divisors (76425429).

126900555 is a wasteful number, since it uses less digits than its factorization.

126900555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11886.

The product of its (nonzero) digits is 13500, while the sum is 33.

The square root of 126900555 is about 11265.0146471276. The cubic root of 126900555 is about 502.5213376747.

The spelling of 126900555 in words is "one hundred twenty-six million, nine hundred thousand, five hundred fifty-five".