142123331 has 8 divisors (see below), whose sum is σ = 162539520. Its totient is φ = 121735368.

The previous prime is 142123309. The next prime is 142123339. The reversal of 142123331 is 133321241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142123331 - 2²² = 137929027 is a prime.

It is a super-2 number, since 2×142123331² = 40398082429071122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142123339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5150 + ... + 17628.

It is an arithmetic number, because the mean of its divisors is an integer number (20317440).

Almost surely, 2^142123331 is an apocalyptic number.

142123331 is a deficient number, since it is larger than the sum of its proper divisors (20416189).

142123331 is a wasteful number, since it uses less digits than its factorization.

142123331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14113.

The product of its digits is 432, while the sum is 20.

The square root of 142123331 is about 11921.5490184791. The cubic root of 142123331 is about 521.8613409647.

Adding to 142123331 its reverse (133321241), we get a palindrome (275444572).

The spelling of 142123331 in words is "one hundred forty-two million, one hundred twenty-three thousand, three hundred thirty-one".