202642643 has 8 divisors (see below), whose sum is σ = 232979712. Its totient is φ = 172652616.

The previous prime is 202642637. The next prime is 202642651. The reversal of 202642643 is 346246202.

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

It is not a de Polignac number, because 202642643 - 2⁶ = 202642579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (202642613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85505 + ... + 87842.

It is an arithmetic number, because the mean of its divisors is an integer number (29122464).

Almost surely, 2^202642643 is an apocalyptic number.

202642643 is a deficient number, since it is larger than the sum of its proper divisors (30337069).

202642643 is a wasteful number, since it uses less digits than its factorization.

202642643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173521.

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 202642643 is about 14235.2605525856. The cubic root of 202642643 is about 587.3679973841.

Adding to 202642643 its reverse (346246202), we get a palindrome (548888845).

The spelling of 202642643 in words is "two hundred two million, six hundred forty-two thousand, six hundred forty-three".