142140624 has 40 divisors (see below), whose sum is σ = 367631232. Its totient is φ = 47324160.

The previous prime is 142140623. The next prime is 142140631. The reversal of 142140624 is 426041241.

It is a happy number.

It is a super-2 number, since 2×142140624² = 40407913982218752, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 142140594 and 142140603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142140623) 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, 67264 + ... + 69344.

Almost surely, 2^142140624 is an apocalyptic number.

It is an amenable number.

142140624 is an abundant number, since it is smaller than the sum of its proper divisors (225490608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142140624 is a wasteful number, since it uses less digits than its factorization.

142140624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3515 (or 3509 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 142140624 is about 11922.2742796834. The cubic root of 142140624 is about 521.8825061083.

Adding to 142140624 its reverse (426041241), we get a palindrome (568181865).

The spelling of 142140624 in words is "one hundred forty-two million, one hundred forty thousand, six hundred twenty-four".