210101042 has 8 divisors (see below), whose sum is σ = 315341100. Its totient is φ = 104987344.

The previous prime is 210101041. The next prime is 210101051. The reversal of 210101042 is 240101012.

It can be written as a sum of positive squares in 2 ways, for example, as 209062681 + 1038361 = 14459^2 + 1019^2 .

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 (210101041) 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, 27317 + ... + 34152.

Almost surely, 2^210101042 is an apocalyptic number.

210101042 is a deficient number, since it is larger than the sum of its proper divisors (105240058).

210101042 is a wasteful number, since it uses less digits than its factorization.

210101042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63180.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 210101042 is about 14494.8626071446. The cubic root of 210101042 is about 594.4875110641.

Adding to 210101042 its reverse (240101012), we get a palindrome (450202054).

The spelling of 210101042 in words is "two hundred ten million, one hundred one thousand, forty-two".