7642176421 has 8 divisors (see below), whose sum is σ = 8337945888. Its totient is φ = 6946578000.

The previous prime is 7642176407. The next prime is 7642176457. The reversal of 7642176421 is 1246712467.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7642176421 - 2⁷ = 7642176293 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 (7642176401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61791 + ... + 138211.

It is an arithmetic number, because the mean of its divisors is an integer number (1042243236).

Almost surely, 2^7642176421 is an apocalyptic number.

It is an amenable number.

7642176421 is a deficient number, since it is larger than the sum of its proper divisors (695769467).

7642176421 is a wasteful number, since it uses less digits than its factorization.

7642176421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85523.

The product of its digits is 112896, while the sum is 40.

The square root of 7642176421 is about 87419.5425577142. The cubic root of 7642176421 is about 1969.7254052233.

Adding to 7642176421 its reverse (1246712467), we get a palindrome (8888888888).

The spelling of 7642176421 in words is "seven billion, six hundred forty-two million, one hundred seventy-six thousand, four hundred twenty-one".