142368431 has 4 divisors (see below), whose sum is σ = 142599792. Its totient is φ = 142137072.

The previous prime is 142368427. The next prime is 142368451. The reversal of 142368431 is 134863241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142368431 - 2² = 142368427 is a prime.

It is a super-2 number, since 2×142368431² = 40537540290803522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142368451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114755 + ... + 115988.

It is an arithmetic number, because the mean of its divisors is an integer number (35649948).

Almost surely, 2^142368431 is an apocalyptic number.

142368431 is a deficient number, since it is larger than the sum of its proper divisors (231361).

142368431 is an equidigital number, since it uses as much as digits as its factorization.

142368431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231360.

The product of its digits is 13824, while the sum is 32.

The square root of 142368431 is about 11931.8242947170. The cubic root of 142368431 is about 522.1611621499.

The spelling of 142368431 in words is "one hundred forty-two million, three hundred sixty-eight thousand, four hundred thirty-one".