142122631 has 8 divisors (see below), whose sum is σ = 167665664. Its totient is φ = 117889560.

The previous prime is 142122623. The next prime is 142122647. The reversal of 142122631 is 136221241.

142122631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142122631 - 2³ = 142122623 is a prime.

It is a super-2 number, since 2×142122631² = 40397684484724322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146122631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327255 + ... + 327688.

It is an arithmetic number, because the mean of its divisors is an integer number (20958208).

Almost surely, 2^142122631 is an apocalyptic number.

142122631 is a deficient number, since it is larger than the sum of its proper divisors (25543033).

142122631 is an equidigital number, since it uses as much as digits as its factorization.

142122631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654981.

The product of its digits is 576, while the sum is 22.

The square root of 142122631 is about 11921.5196598420. The cubic root of 142122631 is about 521.8604841887.

Adding to 142122631 its reverse (136221241), we get a palindrome (278343872).

The spelling of 142122631 in words is "one hundred forty-two million, one hundred twenty-two thousand, six hundred thirty-one".