76351421 has 4 divisors (see below), whose sum is σ = 79671072. Its totient is φ = 73031772.

The previous prime is 76351417. The next prime is 76351427. The reversal of 76351421 is 12415367.

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 not a de Polignac number, because 76351421 - 2² = 76351417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76351427) 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, 1659791 + ... + 1659836.

It is an arithmetic number, because the mean of its divisors is an integer number (19917768).

Almost surely, 2^76351421 is an apocalyptic number.

It is an amenable number.

76351421 is a deficient number, since it is larger than the sum of its proper divisors (3319651).

76351421 is a wasteful number, since it uses less digits than its factorization.

76351421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3319650.

The product of its digits is 5040, while the sum is 29.

The square root of 76351421 is about 8737.9300180306. The cubic root of 76351421 is about 424.2342307466.

Adding to 76351421 its reverse (12415367), we get a palindrome (88766788).

The spelling of 76351421 in words is "seventy-six million, three hundred fifty-one thousand, four hundred twenty-one".