641242 has 16 divisors (see below), whose sum is σ = 1109952. Its totient is φ = 272160.

The previous prime is 641239. The next prime is 641261. The reversal of 641242 is 242146.

641242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×641242² = 822382605128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2142 + ... + 2422.

It is an arithmetic number, because the mean of its divisors is an integer number (69372).

2⁶⁴¹²⁴² is an apocalyptic number.

641242 is a deficient number, since it is larger than the sum of its proper divisors (468710).

641242 is a wasteful number, since it uses less digits than its factorization.

641242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453.

The product of its digits is 384, while the sum is 19.

The square root of 641242 is about 800.7758737624. The cubic root of 641242 is about 86.2330975770.

Adding to 641242 its reverse (242146), we get a palindrome (883388).

The spelling of 641242 in words is "six hundred forty-one thousand, two hundred forty-two".