142685431 has 8 divisors (see below), whose sum is σ = 167476640. Its totient is φ = 118996128.

The previous prime is 142685429. The next prime is 142685447. The reversal of 142685431 is 134586241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142685431 - 2¹ = 142685429 is a prime.

It is a super-2 number, since 2×142685431² = 40718264439311522, 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 (142685531) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 275196 + ... + 275713.

It is an arithmetic number, because the mean of its divisors is an integer number (20934580).

Almost surely, 2^142685431 is an apocalyptic number.

142685431 is a deficient number, since it is larger than the sum of its proper divisors (24791209).

142685431 is an equidigital number, since it uses as much as digits as its factorization.

142685431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550953.

The product of its digits is 23040, while the sum is 34.

The square root of 142685431 is about 11945.1007111702. The cubic root of 142685431 is about 522.5484258743.

The spelling of 142685431 in words is "one hundred forty-two million, six hundred eighty-five thousand, four hundred thirty-one".