142160681 has 24 divisors (see below), whose sum is σ = 165939480. Its totient is φ = 120646656.

The previous prime is 142160659. The next prime is 142160693. The reversal of 142160681 is 186061241.

It can be written as a sum of positive squares in 12 ways, for example, as 336400 + 141824281 = 580^2 + 11909^2 .

It is not a de Polignac number, because 142160681 - 2¹⁴ = 142144297 is a prime.

It is a super-2 number, since 2×142160681² = 40419318444767522, 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 (142160651) 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 23 ways as a sum of consecutive naturals, for example, 620675 + ... + 620903.

It is an arithmetic number, because the mean of its divisors is an integer number (6914145).

Almost surely, 2^142160681 is an apocalyptic number.

It is an amenable number.

142160681 is a deficient number, since it is larger than the sum of its proper divisors (23778799).

142160681 is a wasteful number, since it uses less digits than its factorization.

142160681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 142160681 is about 11923.1154066376. The cubic root of 142160681 is about 521.9070520001.

The spelling of 142160681 in words is "one hundred forty-two million, one hundred sixty thousand, six hundred eighty-one".