76142421 has 12 divisors (see below), whose sum is σ = 110074848. Its totient is φ = 50719464.

The previous prime is 76142419. The next prime is 76142477. The reversal of 76142421 is 12424167.

76142421 is a `hidden beast` number, since 7 + 614 + 2 + 42 + 1 = 666.

It is not a de Polignac number, because 76142421 - 2¹ = 76142419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76142401) 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, 11146 + ... + 16628.

It is an arithmetic number, because the mean of its divisors is an integer number (9172904).

Almost surely, 2^76142421 is an apocalyptic number.

It is an amenable number.

76142421 is a deficient number, since it is larger than the sum of its proper divisors (33932427).

76142421 is a wasteful number, since it uses less digits than its factorization.

76142421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7032 (or 7029 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 76142421 is about 8725.9624684043. The cubic root of 76142421 is about 423.8467855253.

Adding to 76142421 its reverse (12424167), we get a palindrome (88566588).

The spelling of 76142421 in words is "seventy-six million, one hundred forty-two thousand, four hundred twenty-one".