641321254 has 16 divisors (see below), whose sum is σ = 1137319200. Its totient is φ = 265374144.

The previous prime is 641321227. The next prime is 641321257. The reversal of 641321254 is 452123146.

It is a super-2 number, since 2×641321254² = 822585901664265032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641321257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 789399 + ... + 790210.

It is an arithmetic number, because the mean of its divisors is an integer number (71082450).

Almost surely, 2^641321254 is an apocalyptic number.

641321254 is a deficient number, since it is larger than the sum of its proper divisors (495997946).

641321254 is a wasteful number, since it uses less digits than its factorization.

641321254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579647.

The product of its digits is 5760, while the sum is 28.

The square root of 641321254 is about 25324.3213926849. The cubic root of 641321254 is about 862.3665007689.

The spelling of 641321254 in words is "six hundred forty-one million, three hundred twenty-one thousand, two hundred fifty-four".