142991896 has 32 divisors (see below), whose sum is σ = 287496000. Its totient is φ = 66433536.

The previous prime is 142991881. The next prime is 142991909. The reversal of 142991896 is 698199241.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4090 + ... + 17398.

It is an arithmetic number, because the mean of its divisors is an integer number (8984250).

Almost surely, 2^142991896 is an apocalyptic number.

It is an amenable number.

142991896 is an abundant number, since it is smaller than the sum of its proper divisors (144504104).

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

142991896 is a wasteful number, since it uses less digits than its factorization.

142991896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13411 (or 13407 counting only the distinct ones).

The product of its digits is 279936, while the sum is 49.

The square root of 142991896 is about 11957.9218930381. The cubic root of 142991896 is about 522.9222745690.

The spelling of 142991896 in words is "one hundred forty-two million, nine hundred ninety-one thousand, eight hundred ninety-six".