210031242 has 8 divisors (see below), whose sum is σ = 420062496. Its totient is φ = 70010412.

The previous prime is 210031207. The next prime is 210031247. The reversal of 210031242 is 242130012.

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

210031242 is an admirable number.

It is a super-2 number, since 2×210031242² = 88226245232125128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210031247) 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 3 ways as a sum of consecutive naturals, for example, 17502598 + ... + 17502609.

It is an arithmetic number, because the mean of its divisors is an integer number (52507812).

Almost surely, 2^210031242 is an apocalyptic number.

210031242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

210031242 is a wasteful number, since it uses less digits than its factorization.

210031242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35005212.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 210031242 is about 14492.4546575106. The cubic root of 210031242 is about 594.4216700067.

Adding to 210031242 its reverse (242130012), we get a palindrome (452161254).

The spelling of 210031242 in words is "two hundred ten million, thirty-one thousand, two hundred forty-two".