142222131 has 6 divisors (see below), whose sum is σ = 205431980. Its totient is φ = 94814748.

The previous prime is 142222121. The next prime is 142222147. The reversal of 142222131 is 131222241.

It is a happy number.

It is not a de Polignac number, because 142222131 - 2⁵ = 142222099 is a prime.

It is a super-2 number, since 2×142222131² = 40454269092362322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142222121) 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 5 ways as a sum of consecutive naturals, for example, 7901221 + ... + 7901238.

Almost surely, 2^142222131 is an apocalyptic number.

142222131 is a deficient number, since it is larger than the sum of its proper divisors (63209849).

142222131 is a wasteful number, since it uses less digits than its factorization.

142222131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15802465 (or 15802462 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 142222131 is about 11925.6920553903. The cubic root of 142222131 is about 521.9822405549.

Adding to 142222131 its reverse (131222241), we get a palindrome (273444372).

The spelling of 142222131 in words is "one hundred forty-two million, two hundred twenty-two thousand, one hundred thirty-one".