76042521 has 12 divisors (see below), whose sum is σ = 111479472. Its totient is φ = 49937976.

The previous prime is 76042517. The next prime is 76042523. The reversal of 76042521 is 12524067.

76042521 is a `hidden beast` number, since 7 + 604 + 2 + 52 + 1 = 666.

It is not a de Polignac number, because 76042521 - 2² = 76042517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76042523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62451 + ... + 63656.

It is an arithmetic number, because the mean of its divisors is an integer number (9289956).

Almost surely, 2^76042521 is an apocalyptic number.

It is an amenable number.

76042521 is a deficient number, since it is larger than the sum of its proper divisors (35436951).

76042521 is a wasteful number, since it uses less digits than its factorization.

76042521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126180 (or 126177 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 76042521 is about 8720.2362926701. The cubic root of 76042521 is about 423.6613399496.

Adding to 76042521 its reverse (12524067), we get a palindrome (88566588).

The spelling of 76042521 in words is "seventy-six million, forty-two thousand, five hundred twenty-one".