642332201 has 8 divisors (see below), whose sum is σ = 766011264. Its totient is φ = 526632480.

The previous prime is 642332189. The next prime is 642332203. The reversal of 642332201 is 102233246.

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 642332201 - 2⁶ = 642332137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (642332203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1994660 + ... + 1994981.

It is an arithmetic number, because the mean of its divisors is an integer number (95751408).

Almost surely, 2^642332201 is an apocalyptic number.

It is an amenable number.

642332201 is a deficient number, since it is larger than the sum of its proper divisors (123679063).

642332201 is a wasteful number, since it uses less digits than its factorization.

642332201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989671.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 642332201 is about 25344.2735346666. The cubic root of 642332201 is about 862.8193934656.

Adding to 642332201 its reverse (102233246), we get a palindrome (744565447).

The spelling of 642332201 in words is "six hundred forty-two million, three hundred thirty-two thousand, two hundred one".