142125831 has 12 divisors (see below), whose sum is σ = 217369152. Its totient is φ = 89176896.

The previous prime is 142125799. The next prime is 142125857. The reversal of 142125831 is 138521241.

It is not a de Polignac number, because 142125831 - 2⁵ = 142125799 is a prime.

It is a super-2 number, since 2×142125831² = 40399503674881122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142125795 and 142125804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142125131) 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 11 ways as a sum of consecutive naturals, for example, 464311 + ... + 464616.

It is an arithmetic number, because the mean of its divisors is an integer number (18114096).

Almost surely, 2^142125831 is an apocalyptic number.

142125831 is a deficient number, since it is larger than the sum of its proper divisors (75243321).

142125831 is a wasteful number, since it uses less digits than its factorization.

142125831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928950 (or 928947 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 142125831 is about 11921.6538701642. The cubic root of 142125831 is about 521.8644008556.

The spelling of 142125831 in words is "one hundred forty-two million, one hundred twenty-five thousand, eight hundred thirty-one".