142210138 has 16 divisors (see below), whose sum is σ = 244675584. Its totient is φ = 60725520.

The previous prime is 142210097. The next prime is 142210141. The reversal of 142210138 is 831012241.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14458 + ... + 22213.

It is an arithmetic number, because the mean of its divisors is an integer number (15292224).

Almost surely, 2^142210138 is an apocalyptic number.

142210138 is a deficient number, since it is larger than the sum of its proper divisors (102465446).

142210138 is a wasteful number, since it uses less digits than its factorization.

142210138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36957.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 142210138 is about 11925.1892228174. The cubic root of 142210138 is about 521.9675679463.

Adding to 142210138 its reverse (831012241), we get a palindrome (973222379).

The spelling of 142210138 in words is "one hundred forty-two million, two hundred ten thousand, one hundred thirty-eight".