76107421 has 16 divisors (see below), whose sum is σ = 83655936. Its totient is φ = 68818176.

The previous prime is 76107413. The next prime is 76107469. The reversal of 76107421 is 12470167.

It is a cyclic number.

It is not a de Polignac number, because 76107421 - 2³ = 76107413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76107421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76107401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151056 + ... + 151558.

It is an arithmetic number, because the mean of its divisors is an integer number (5228496).

Almost surely, 2^76107421 is an apocalyptic number.

It is an amenable number.

76107421 is a deficient number, since it is larger than the sum of its proper divisors (7548515).

76107421 is a wasteful number, since it uses less digits than its factorization.

76107421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 76107421 is about 8723.9567284576. The cubic root of 76107421 is about 423.7818330723.

Adding to 76107421 its reverse (12470167), we get a palindrome (88577588).

The spelling of 76107421 in words is "seventy-six million, one hundred seven thousand, four hundred twenty-one".