210113442 has 48 divisors (see below), whose sum is σ = 567582912. Its totient is φ = 54574560.

The previous prime is 210113429. The next prime is 210113461. The reversal of 210113442 is 244311012.

210113442 is a `hidden beast` number, since 210 + 1 + 13 + 442 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 74413 + ... + 77184.

It is an arithmetic number, because the mean of its divisors is an integer number (11824644).

Almost surely, 2^210113442 is an apocalyptic number.

210113442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

210113442 is an abundant number, since it is smaller than the sum of its proper divisors (357469470).

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

210113442 is a wasteful number, since it uses less digits than its factorization.

210113442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151623 (or 151620 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 210113442 is about 14495.2903385893. The cubic root of 210113442 is about 594.4992062308.

Adding to 210113442 its reverse (244311012), we get a palindrome (454424454).

The spelling of 210113442 in words is "two hundred ten million, one hundred thirteen thousand, four hundred forty-two".