142442031 has 24 divisors (see below), whose sum is σ = 212394880. Its totient is φ = 84661632.

The previous prime is 142442029. The next prime is 142442071. The reversal of 142442031 is 130244241.

It is not a de Polignac number, because 142442031 - 2¹ = 142442029 is a prime.

It is a super-2 number, since 2×142442031² = 40579464390809922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142441989 and 142442007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142442071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12150 + ... + 20796.

Almost surely, 2^142442031 is an apocalyptic number.

142442031 is a deficient number, since it is larger than the sum of its proper divisors (69952849).

142442031 is a wasteful number, since it uses less digits than its factorization.

142442031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8703 (or 8686 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 142442031 is about 11934.9080851090. The cubic root of 142442031 is about 522.2511269466.

Adding to 142442031 its reverse (130244241), we get a palindrome (272686272).

The spelling of 142442031 in words is "one hundred forty-two million, four hundred forty-two thousand, thirty-one".