142636031434021 has 4 divisors (see below), whose sum is σ = 150143190983200. Its totient is φ = 135128871884844.

The previous prime is 142636031434007. The next prime is 142636031434087. The reversal of 142636031434021 is 120434130636241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 142636031434021 - 2⁴⁵ = 107451659345189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142636034434021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3753579774561 + ... + 3753579774598.

It is an arithmetic number, because the mean of its divisors is an integer number (37535797745800).

Almost surely, 2^{142636031434021} is an apocalyptic number.

It is an amenable number.

142636031434021 is a deficient number, since it is larger than the sum of its proper divisors (7507159549179).

142636031434021 is an equidigital number, since it uses as much as digits as its factorization.

142636031434021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7507159549178.

The product of its (nonzero) digits is 248832, while the sum is 40.

The spelling of 142636031434021 in words is "one hundred forty-two trillion, six hundred thirty-six billion, thirty-one million, four hundred thirty-four thousand, twenty-one".