7142131 has 4 divisors (see below), whose sum is σ = 7153272. Its totient is φ = 7130992.

The previous prime is 7142129. The next prime is 7142141. The reversal of 7142131 is 1312417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1312417 = 17 ⋅77201.

It is a cyclic number.

It is not a de Polignac number, because 7142131 - 2¹ = 7142129 is a prime.

It is a super-2 number, since 2×7142131² = 102020070442322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7142099 and 7142108.

It is not an unprimeable number, because it can be changed into a prime (7142111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4546 + ... + 5911.

It is an arithmetic number, because the mean of its divisors is an integer number (1788318).

Almost surely, 2^7142131 is an apocalyptic number.

7142131 is a deficient number, since it is larger than the sum of its proper divisors (11141).

7142131 is a wasteful number, since it uses less digits than its factorization.

7142131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11140.

The product of its digits is 168, while the sum is 19.

The square root of 7142131 is about 2672.4765667822. The cubic root of 7142131 is about 192.5791522476.

Adding to 7142131 its reverse (1312417), we get a palindrome (8454548).

The spelling of 7142131 in words is "seven million, one hundred forty-two thousand, one hundred thirty-one".