210945442 has 16 divisors (see below), whose sum is σ = 324747072. Its totient is φ = 102730320.

The previous prime is 210945439. The next prime is 210945479. The reversal of 210945442 is 244549012.

210945442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4173 + ... + 20959.

It is an arithmetic number, because the mean of its divisors is an integer number (20296692).

Almost surely, 2^210945442 is an apocalyptic number.

210945442 is a deficient number, since it is larger than the sum of its proper divisors (113801630).

210945442 is a wasteful number, since it uses less digits than its factorization.

210945442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16953.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 210945442 is about 14523.9609611153. The cubic root of 210945442 is about 595.2828652916.

The spelling of 210945442 in words is "two hundred ten million, nine hundred forty-five thousand, four hundred forty-two".