142979814 has 24 divisors (see below), whose sum is σ = 311151360. Its totient is φ = 47450448.

The previous prime is 142979797. The next prime is 142979827. The reversal of 142979814 is 418979241.

It is a happy number.

It is a super-2 number, since 2×142979814² = 40886454422949192, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 142979814.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13222 + ... + 21465.

It is an arithmetic number, because the mean of its divisors is an integer number (12964640).

Almost surely, 2^142979814 is an apocalyptic number.

142979814 is an abundant number, since it is smaller than the sum of its proper divisors (168171546).

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

142979814 is a wasteful number, since it uses less digits than its factorization.

142979814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34924 (or 34921 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 142979814 is about 11957.4166942530. The cubic root of 142979814 is about 522.9075461705.

The spelling of 142979814 in words is "one hundred forty-two million, nine hundred seventy-nine thousand, eight hundred fourteen".