142860388 has 24 divisors (see below), whose sum is σ = 273107520. Its totient is φ = 64847520.

The previous prime is 142860379. The next prime is 142860391. The reversal of 142860388 is 883068241.

It is a self number, because there is not a number n which added to its sum of digits gives 142860388.

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, 38670 + ... + 42202.

It is an arithmetic number, because the mean of its divisors is an integer number (11379480).

Almost surely, 2^142860388 is an apocalyptic number.

It is an amenable number.

142860388 is a deficient number, since it is larger than the sum of its proper divisors (130247132).

142860388 is a wasteful number, since it uses less digits than its factorization.

142860388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4467 (or 4465 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 142860388 is about 11952.4218466384. The cubic root of 142860388 is about 522.7619168680.

It can be divided in two parts, 1428 and 60388, that added together give a palindrome (61816).

The spelling of 142860388 in words is "one hundred forty-two million, eight hundred sixty thousand, three hundred eighty-eight".