142969864 has 32 divisors (see below), whose sum is σ = 289889280. Its totient is φ = 65845504.

The previous prime is 142969859. The next prime is 142969873. The reversal of 142969864 is 468969241.

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, 4792 + ... + 17575.

It is an arithmetic number, because the mean of its divisors is an integer number (9059040).

Almost surely, 2^142969864 is an apocalyptic number.

It is an amenable number.

142969864 is an abundant number, since it is smaller than the sum of its proper divisors (146919416).

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

142969864 is a wasteful number, since it uses less digits than its factorization.

142969864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22437 (or 22433 counting only the distinct ones).

The product of its digits is 746496, while the sum is 49.

The square root of 142969864 is about 11957.0006272476. Note that the first 3 decimals coincide. The cubic root of 142969864 is about 522.8954161347.

The spelling of 142969864 in words is "one hundred forty-two million, nine hundred sixty-nine thousand, eight hundred sixty-four".