642210241 has 8 divisors (see below), whose sum is σ = 715776480. Its totient is φ = 572620608.

The previous prime is 642210223. The next prime is 642210269. The reversal of 642210241 is 142012246.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 642210241 - 2⁷ = 642210113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642210271) 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, 993811 + ... + 994456.

It is an arithmetic number, because the mean of its divisors is an integer number (89472060).

Almost surely, 2^642210241 is an apocalyptic number.

It is an amenable number.

642210241 is a deficient number, since it is larger than the sum of its proper divisors (73566239).

642210241 is a wasteful number, since it uses less digits than its factorization.

642210241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988303.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 642210241 is about 25341.8673542421. The cubic root of 642210241 is about 862.7647819973.

Adding to 642210241 its reverse (142012246), we get a palindrome (784222487).

The spelling of 642210241 in words is "six hundred forty-two million, two hundred ten thousand, two hundred forty-one".