142255235021 has 4 divisors (see below), whose sum is σ = 144378447552. Its totient is φ = 140132022492.

The previous prime is 142255235011. The next prime is 142255235041. The reversal of 142255235021 is 120532552241.

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 a cyclic number.

It is not a de Polignac number, because 142255235021 - 2³⁰ = 141181493197 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 (142255235011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1061606165 + ... + 1061606298.

It is an arithmetic number, because the mean of its divisors is an integer number (36094611888).

Almost surely, 2^142255235021 is an apocalyptic number.

It is an amenable number.

142255235021 is a deficient number, since it is larger than the sum of its proper divisors (2123212531).

142255235021 is an equidigital number, since it uses as much as digits as its factorization.

142255235021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123212530.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 142255235021 its reverse (120532552241), we get a palindrome (262787787262).

The spelling of 142255235021 in words is "one hundred forty-two billion, two hundred fifty-five million, two hundred thirty-five thousand, twenty-one".