142992440 has 32 divisors (see below), whose sum is σ = 340660080. Its totient is φ = 53832192.

The previous prime is 142992427. The next prime is 142992503. The reversal of 142992440 is 44299241.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 142992440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104462 + ... + 105821.

Almost surely, 2^142992440 is an apocalyptic number.

142992440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142992440 is an abundant number, since it is smaller than the sum of its proper divisors (197667640).

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

142992440 is a wasteful number, since it uses less digits than its factorization.

142992440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210311 (or 210307 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 142992440 is about 11957.9446394437. The cubic root of 142992440 is about 522.9229377053.

The spelling of 142992440 in words is "one hundred forty-two million, nine hundred ninety-two thousand, four hundred forty".