142388902 has 4 divisors (see below), whose sum is σ = 213583356. Its totient is φ = 71194450.

The previous prime is 142388887. The next prime is 142388933. The reversal of 142388902 is 209883241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 209883241 = 17 ⋅12346073.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35597224 + ... + 35597227.

It is an arithmetic number, because the mean of its divisors is an integer number (53395839).

Almost surely, 2^142388902 is an apocalyptic number.

142388902 is a deficient number, since it is larger than the sum of its proper divisors (71194454).

142388902 is an equidigital number, since it uses as much as digits as its factorization.

142388902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71194453.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 142388902 is about 11932.6820958241. The cubic root of 142388902 is about 522.1861879434.

The spelling of 142388902 in words is "one hundred forty-two million, three hundred eighty-eight thousand, nine hundred two".