210291042 has 32 divisors (see below), whose sum is σ = 467550720. Its totient is φ = 62616960.

The previous prime is 210291023. The next prime is 210291043. The reversal of 210291042 is 240192012.

It is not an unprimeable number, because it can be changed into a prime (210291043) 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 15 ways as a sum of consecutive naturals, for example, 41067 + ... + 45902.

It is an arithmetic number, because the mean of its divisors is an integer number (14610960).

Almost surely, 2^210291042 is an apocalyptic number.

210291042 is an abundant number, since it is smaller than the sum of its proper divisors (257259678).

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

210291042 is a wasteful number, since it uses less digits than its factorization.

210291042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87018.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 210291042 is about 14501.4151723203. The cubic root of 210291042 is about 594.6666607317. Note that the first 5 decimals are identical.

The spelling of 210291042 in words is "two hundred ten million, two hundred ninety-one thousand, forty-two".