142142242 has 32 divisors (see below), whose sum is σ = 239482944. Its totient is φ = 62726400.

The previous prime is 142142233. The next prime is 142142257. The reversal of 142142242 is 242241241.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 106942 + ... + 108262.

It is an arithmetic number, because the mean of its divisors is an integer number (7483842).

Almost surely, 2^142142242 is an apocalyptic number.

142142242 is a deficient number, since it is larger than the sum of its proper divisors (97340702).

142142242 is a wasteful number, since it uses less digits than its factorization.

142142242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474.

The product of its digits is 1024, while the sum is 22.

The square root of 142142242 is about 11922.3421356712. The cubic root of 142142242 is about 521.8844863133.

Adding to 142142242 its reverse (242241241), we get a palindrome (384383483).

The spelling of 142142242 in words is "one hundred forty-two million, one hundred forty-two thousand, two hundred forty-two".