76142681 has 4 divisors (see below), whose sum is σ = 76484352. Its totient is φ = 75801012.

The previous prime is 76142669. The next prime is 76142683. The reversal of 76142681 is 18624167.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76142681 is a prime.

It is a super-2 number, since 2×76142681² = 11595415739735522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76142683) 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, 170501 + ... + 170946.

It is an arithmetic number, because the mean of its divisors is an integer number (19121088).

Almost surely, 2^76142681 is an apocalyptic number.

It is an amenable number.

76142681 is a deficient number, since it is larger than the sum of its proper divisors (341671).

76142681 is a wasteful number, since it uses less digits than its factorization.

76142681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341670.

The product of its digits is 16128, while the sum is 35.

The square root of 76142681 is about 8725.9773664616. The cubic root of 76142681 is about 423.8472679548.

The spelling of 76142681 in words is "seventy-six million, one hundred forty-two thousand, six hundred eighty-one".