76542031 has 4 divisors (see below), whose sum is σ = 76755600. Its totient is φ = 76328464.

The previous prime is 76542023. The next prime is 76542043. The reversal of 76542031 is 13024567.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 76542031 - 2³ = 76542023 is a prime.

It is a super-2 number, since 2×76542031² = 11717365019209922, 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 (76542001) 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, 106246 + ... + 106963.

It is an arithmetic number, because the mean of its divisors is an integer number (19188900).

Almost surely, 2^76542031 is an apocalyptic number.

76542031 is a deficient number, since it is larger than the sum of its proper divisors (213569).

76542031 is a wasteful number, since it uses less digits than its factorization.

76542031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213568.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 76542031 is about 8748.8302646697. The cubic root of 76542031 is about 424.5869685109.

Adding to 76542031 its reverse (13024567), we get a palindrome (89566598).

The spelling of 76542031 in words is "seventy-six million, five hundred forty-two thousand, thirty-one".