7921230401 has 16 divisors (see below), whose sum is σ = 9102307968. Its totient is φ = 6752592000.

The previous prime is 7921230389. The next prime is 7921230439. The reversal of 7921230401 is 1040321297.

It is not a de Polignac number, because 7921230401 - 2¹⁸ = 7920968257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7921230481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1711871 + ... + 1716491.

It is an arithmetic number, because the mean of its divisors is an integer number (568894248).

Almost surely, 2^7921230401 is an apocalyptic number.

It is an amenable number.

7921230401 is a deficient number, since it is larger than the sum of its proper divisors (1181077567).

7921230401 is a wasteful number, since it uses less digits than its factorization.

7921230401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5912.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 7921230401 is about 89001.2943782280. The cubic root of 7921230401 is about 1993.4142042005.

Adding to 7921230401 its reverse (1040321297), we get a palindrome (8961551698).

The spelling of 7921230401 in words is "seven billion, nine hundred twenty-one million, two hundred thirty thousand, four hundred one".