142864590 has 32 divisors (see below), whose sum is σ = 374046336. Its totient is φ = 34633760.

The previous prime is 142864571. The next prime is 142864633. The reversal of 142864590 is 95468241.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 216132 + ... + 216791.

It is an arithmetic number, because the mean of its divisors is an integer number (11688948).

Almost surely, 2^142864590 is an apocalyptic number.

142864590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142864590 is an abundant number, since it is smaller than the sum of its proper divisors (231181746).

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

142864590 is a wasteful number, since it uses less digits than its factorization.

142864590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432944.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 142864590 is about 11952.5976256210. The cubic root of 142864590 is about 522.7670422077.

The spelling of 142864590 in words is "one hundred forty-two million, eight hundred sixty-four thousand, five hundred ninety".