76042561 has 6 divisors (see below), whose sum is σ = 88457730. Its totient is φ = 65179296.

The previous prime is 76042537. The next prime is 76042573. The reversal of 76042561 is 16524067.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 51480625 + 24561936 = 7175^2 + 4956^2 .

It is not a de Polignac number, because 76042561 - 2⁵ = 76042529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76042861) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 775896 + ... + 775993.

It is an arithmetic number, because the mean of its divisors is an integer number (14742955).

Almost surely, 2^76042561 is an apocalyptic number.

It is an amenable number.

76042561 is a deficient number, since it is larger than the sum of its proper divisors (12415169).

76042561 is a wasteful number, since it uses less digits than its factorization.

76042561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551903 (or 1551896 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 76042561 is about 8720.2385861856. The cubic root of 76042561 is about 423.6614142346.

The spelling of 76042561 in words is "seventy-six million, forty-two thousand, five hundred sixty-one".