7901254321 has 9 divisors (see below), whose sum is σ = 7987966329. Its totient is φ = 7815476436.

The previous prime is 7901254313. The next prime is 7901254349. The reversal of 7901254321 is 1234521097.

It is a happy number.

The square root of 7901254321 is 88889.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 7901254321 - 2³ = 7901254313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7901254121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9155136 + ... + 9155998.

Almost surely, 2^7901254321 is an apocalyptic number.

7901254321 is the 88889-th square number.

7901254321 is the 44445-th centered octagonal number.

It is an amenable number.

7901254321 is a deficient number, since it is larger than the sum of its proper divisors (86712008).

7901254321 is an frugal number, since it uses more digits than its factorization.

7901254321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932 (or 966 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The cubic root of 7901254321 is about 1991.7371026935.

The spelling of 7901254321 in words is "seven billion, nine hundred one million, two hundred fifty-four thousand, three hundred twenty-one".