242199980 has 24 divisors (see below), whose sum is σ = 554858640. Its totient is φ = 88072640.

The previous prime is 242199961. The next prime is 242200009. The reversal of 242199980 is 89991242.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550235 + ... + 550674.

It is an arithmetic number, because the mean of its divisors is an integer number (23119110).

Almost surely, 2^242199980 is an apocalyptic number.

242199980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242199980 is an abundant number, since it is smaller than the sum of its proper divisors (312658660).

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

242199980 is a wasteful number, since it uses less digits than its factorization.

242199980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100929 (or 1100927 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 242199980 is about 15562.7754594095. The cubic root of 242199980 is about 623.3395756252.

The spelling of 242199980 in words is "two hundred forty-two million, one hundred ninety-nine thousand, nine hundred eighty".