242021100 has 36 divisors (see below), whose sum is σ = 700248584. Its totient is φ = 64538880.

The previous prime is 242021081. The next prime is 242021119. The reversal of 242021100 is 1120242.

It is an interprime number because it is at equal distance from previous prime (242021081) and next prime (242021119).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 403069 + ... + 403668.

Almost surely, 2^242021100 is an apocalyptic number.

242021100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242021100 is an abundant number, since it is smaller than the sum of its proper divisors (458227484).

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

242021100 is a wasteful number, since it uses less digits than its factorization.

242021100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806754 (or 806747 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 242021100 is about 15557.0273510076. The cubic root of 242021100 is about 623.1860792662.

Adding to 242021100 its reverse (1120242), we get a palindrome (243141342).

The spelling of 242021100 in words is "two hundred forty-two million, twenty-one thousand, one hundred".