210493642 has 8 divisors (see below), whose sum is σ = 316308996. Its totient is φ = 105057312.

The previous prime is 210493607. The next prime is 210493649. The reversal of 210493642 is 246394012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 169546441 + 40947201 = 13021^2 + 6399^2 .

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

It is not an unprimeable number, because it can be changed into a prime (210493649) 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 3 ways as a sum of consecutive naturals, for example, 93363 + ... + 95590.

Almost surely, 2^210493642 is an apocalyptic number.

210493642 is a deficient number, since it is larger than the sum of its proper divisors (105815354).

210493642 is a wasteful number, since it uses less digits than its factorization.

210493642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189512.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 210493642 is about 14508.3990157426. The cubic root of 210493642 is about 594.8575720103.

The spelling of 210493642 in words is "two hundred ten million, four hundred ninety-three thousand, six hundred forty-two".