142235685 has 36 divisors (see below), whose sum is σ = 261921348. Its totient is φ = 71390208.

The previous prime is 142235641. The next prime is 142235711. The reversal of 142235685 is 586532241.

It can be written as a sum of positive squares in 6 ways, for example, as 34117281 + 108118404 = 5841^2 + 10398^2 .

It is not a de Polignac number, because 142235685 - 2¹⁵ = 142202917 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7537 + ... + 18473.

It is an arithmetic number, because the mean of its divisors is an integer number (7275593).

Almost surely, 2^142235685 is an apocalyptic number.

142235685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142235685 is a deficient number, since it is larger than the sum of its proper divisors (119685663).

142235685 is a wasteful number, since it uses less digits than its factorization.

142235685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10982 (or 10962 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 142235685 is about 11926.2603107596. The cubic root of 142235685 is about 521.9988219465.

The spelling of 142235685 in words is "one hundred forty-two million, two hundred thirty-five thousand, six hundred eighty-five".