69142131 has 12 divisors (see below), whose sum is σ = 99947952. Its totient is φ = 46059696.

The previous prime is 69142091. The next prime is 69142133. The reversal of 69142131 is 13124196.

It is not a de Polignac number, because 69142131 - 2⁶ = 69142067 is a prime.

It is a super-2 number, since 2×69142131² = 9561268558442322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 69142095 and 69142104.

It is not an unprimeable number, because it can be changed into a prime (69142133) 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, 16050 + ... + 19896.

It is an arithmetic number, because the mean of its divisors is an integer number (8328996).

Almost surely, 2^69142131 is an apocalyptic number.

69142131 is a deficient number, since it is larger than the sum of its proper divisors (30805821).

69142131 is a wasteful number, since it uses less digits than its factorization.

69142131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5850 (or 5847 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 69142131 is about 8315.1747426016. The cubic root of 69142131 is about 410.4380228499.

It can be divided in two parts, 6914 and 2131, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 69142131 in words is "sixty-nine million, one hundred forty-two thousand, one hundred thirty-one".