142237868 has 12 divisors (see below), whose sum is σ = 249002040. Its totient is φ = 71094432.

The previous prime is 142237867. The next prime is 142237883. The reversal of 142237868 is 868732241.

It is a super-2 number, since 2×142237868² = 40463222186370848, which contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (142237867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15128 + ... + 22656.

It is an arithmetic number, because the mean of its divisors is an integer number (20750170).

Almost surely, 2^142237868 is an apocalyptic number.

It is an amenable number.

142237868 is a deficient number, since it is larger than the sum of its proper divisors (106764172).

142237868 is a wasteful number, since it uses less digits than its factorization.

142237868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12256 (or 12254 counting only the distinct ones).

The product of its digits is 129024, while the sum is 41.

The square root of 142237868 is about 11926.3518311343. The cubic root of 142237868 is about 522.0014924381.

The spelling of 142237868 in words is "one hundred forty-two million, two hundred thirty-seven thousand, eight hundred sixty-eight".