641142238 has 16 divisors (see below), whose sum is σ = 1050752880. Its totient is φ = 290980800.

The previous prime is 641142223. The next prime is 641142241. The reversal of 641142238 is 832241146.

It is a super-2 number, since 2×641142238² = 822126738695297288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 7503 + ... + 36586.

It is an arithmetic number, because the mean of its divisors is an integer number (65672055).

Almost surely, 2^641142238 is an apocalyptic number.

641142238 is a deficient number, since it is larger than the sum of its proper divisors (409610642).

641142238 is a wasteful number, since it uses less digits than its factorization.

641142238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44763.

The product of its digits is 9216, while the sum is 31.

The square root of 641142238 is about 25320.7866781425. The cubic root of 641142238 is about 862.2862540559.

The spelling of 641142238 in words is "six hundred forty-one million, one hundred forty-two thousand, two hundred thirty-eight".