642203313 has 8 divisors (see below), whose sum is σ = 863013888. Its totient is φ = 424764144.

The previous prime is 642203297. The next prime is 642203327. The reversal of 642203313 is 313302246.

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

It is not a de Polignac number, because 642203313 - 2⁴ = 642203297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (642203383) 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, 842406 + ... + 843167.

It is an arithmetic number, because the mean of its divisors is an integer number (107876736).

Almost surely, 2^642203313 is an apocalyptic number.

It is an amenable number.

642203313 is a deficient number, since it is larger than the sum of its proper divisors (220810575).

642203313 is a wasteful number, since it uses less digits than its factorization.

642203313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1685703.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 642203313 is about 25341.7306630782. The cubic root of 642203313 is about 862.7616795575.

Adding to 642203313 its reverse (313302246), we get a palindrome (955505559).

The spelling of 642203313 in words is "six hundred forty-two million, two hundred three thousand, three hundred thirteen".