126142555 has 32 divisors (see below), whose sum is σ = 190614528. Its totient is φ = 77846400.

The previous prime is 126142537. The next prime is 126142559. The reversal of 126142555 is 555241621.

It is not a de Polignac number, because 126142555 - 2⁹ = 126142043 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126142559) 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 31 ways as a sum of consecutive naturals, for example, 38065 + ... + 41245.

It is an arithmetic number, because the mean of its divisors is an integer number (5956704).

Almost surely, 2^126142555 is an apocalyptic number.

126142555 is a deficient number, since it is larger than the sum of its proper divisors (64471973).

126142555 is a wasteful number, since it uses less digits than its factorization.

126142555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3307.

The product of its digits is 12000, while the sum is 31.

The square root of 126142555 is about 11231.3202696744. The cubic root of 126142555 is about 501.5187885581.

The spelling of 126142555 in words is "one hundred twenty-six million, one hundred forty-two thousand, five hundred fifty-five".