242509900 has 36 divisors (see below), whose sum is σ = 543229120. Its totient is φ = 93873600.

The previous prime is 242509871. The next prime is 242509903. The reversal of 242509900 is 9905242.

242509900 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×242509900² = 117622103196020000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (242509903) 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 11 ways as a sum of consecutive naturals, for example, 36015 + ... + 42214.

Almost surely, 2^242509900 is an apocalyptic number.

242509900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242509900 is an abundant number, since it is smaller than the sum of its proper divisors (300719220).

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

242509900 is a wasteful number, since it uses less digits than its factorization.

242509900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78274 (or 78267 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 242509900 is about 15572.7293689963. The cubic root of 242509900 is about 623.6053381843.

The spelling of 242509900 in words is "two hundred forty-two million, five hundred nine thousand, nine hundred".