126005633042 has 4 divisors (see below), whose sum is σ = 189008449566. Its totient is φ = 63002816520.

The previous prime is 126005633023. The next prime is 126005633051. The reversal of 126005633042 is 240336500621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 114676372321 + 11329260721 = 338639^2 + 106439^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31501408259 + ... + 31501408262.

Almost surely, 2^126005633042 is an apocalyptic number.

126005633042 is a deficient number, since it is larger than the sum of its proper divisors (63002816524).

126005633042 is an equidigital number, since it uses as much as digits as its factorization.

126005633042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63002816523.

The product of its (nonzero) digits is 25920, while the sum is 32.

The spelling of 126005633042 in words is "one hundred twenty-six billion, five million, six hundred thirty-three thousand, forty-two".