202646442 has 16 divisors (see below), whose sum is σ = 418367232. Its totient is φ = 65369760.

The previous prime is 202646393. The next prime is 202646471. The reversal of 202646442 is 244646202.

It is an unprimeable number.

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, 544563 + ... + 544934.

It is an arithmetic number, because the mean of its divisors is an integer number (26147952).

Almost surely, 2^202646442 is an apocalyptic number.

202646442 is an abundant number, since it is smaller than the sum of its proper divisors (215720790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202646442 is a wasteful number, since it uses less digits than its factorization.

202646442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089533.

The product of its (nonzero) digits is 18432, while the sum is 30.

The square root of 202646442 is about 14235.3939882253. The cubic root of 202646442 is about 587.3716678801.

It can be divided in two parts, 20 and 2646442, that added together give a palindrome (2646462).

The spelling of 202646442 in words is "two hundred two million, six hundred forty-six thousand, four hundred forty-two".