142297686 has 24 divisors (see below), whose sum is σ = 314130960. Its totient is φ = 46537296.

The previous prime is 142297681. The next prime is 142297691. The reversal of 142297686 is 686792241.

It is a happy number.

142297686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (142297681) and next prime (142297691).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142297681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73626 + ... + 75533.

It is an arithmetic number, because the mean of its divisors is an integer number (13088790).

Almost surely, 2^142297686 is an apocalyptic number.

142297686 is an abundant number, since it is smaller than the sum of its proper divisors (171833274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142297686 is a wasteful number, since it uses less digits than its factorization.

142297686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149220 (or 149217 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 142297686 is about 11928.8593754810. The cubic root of 142297686 is about 522.0746579261.

The spelling of 142297686 in words is "one hundred forty-two million, two hundred ninety-seven thousand, six hundred eighty-six".