242121300 has 36 divisors (see below), whose sum is σ = 700538496. Its totient is φ = 64565600.

The previous prime is 242121263. The next prime is 242121301. The reversal of 242121300 is 3121242.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 242121300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242121301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 403236 + ... + 403835.

Almost surely, 2^242121300 is an apocalyptic number.

242121300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242121300 is an abundant number, since it is smaller than the sum of its proper divisors (458417196).

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

242121300 is a wasteful number, since it uses less digits than its factorization.

242121300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807088 (or 807081 counting only the distinct ones).

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

The square root of 242121300 is about 15560.2474273387. The cubic root of 242121300 is about 623.2720698812.

Adding to 242121300 its reverse (3121242), we get a palindrome (245242542).

The spelling of 242121300 in words is "two hundred forty-two million, one hundred twenty-one thousand, three hundred".