142042031 has 8 divisors (see below), whose sum is σ = 146828928. Its totient is φ = 137268000.

The previous prime is 142042027. The next prime is 142042073. The reversal of 142042031 is 130240241.

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

It is not a de Polignac number, because 142042031 - 2² = 142042027 is a prime.

It is a super-2 number, since 2×142042031² = 40351877141209922, 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 (142042091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22661 + ... + 28241.

It is an arithmetic number, because the mean of its divisors is an integer number (18353616).

Almost surely, 2^142042031 is an apocalyptic number.

142042031 is a deficient number, since it is larger than the sum of its proper divisors (4786897).

142042031 is an equidigital number, since it uses as much as digits as its factorization.

142042031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6433.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 142042031 is about 11918.1387389139. The cubic root of 142042031 is about 521.7618137458.

Adding to 142042031 its reverse (130240241), we get a palindrome (272282272).

The spelling of 142042031 in words is "one hundred forty-two million, forty-two thousand, thirty-one".