142123031 has 8 divisors (see below), whose sum is σ = 146113344. Its totient is φ = 138140640.

The previous prime is 142122991. The next prime is 142123039. The reversal of 142123031 is 130321241.

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 142123031 - 2¹⁰ = 142122007 is a prime.

It is a super-2 number, since 2×142123031² = 40397911881253922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142123039) 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, 68201 + ... + 70253.

It is an arithmetic number, because the mean of its divisors is an integer number (18264168).

Almost surely, 2^142123031 is an apocalyptic number.

142123031 is a deficient number, since it is larger than the sum of its proper divisors (3990313).

142123031 is a wasteful number, since it uses less digits than its factorization.

142123031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3961.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 142123031 is about 11921.5364362149. The cubic root of 142123031 is about 521.8609737753.

Adding to 142123031 its reverse (130321241), we get a palindrome (272444272).

The spelling of 142123031 in words is "one hundred forty-two million, one hundred twenty-three thousand, thirty-one".