242787920 has 40 divisors (see below), whose sum is σ = 565154304. Its totient is φ = 96999552.

The previous prime is 242787899. The next prime is 242787949. The reversal of 242787920 is 29787242.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 105017 + ... + 107303.

Almost surely, 2^242787920 is an apocalyptic number.

242787920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

242787920 is an abundant number, since it is smaller than the sum of its proper divisors (322366384).

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

242787920 is a wasteful number, since it uses less digits than its factorization.

242787920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3627 (or 3621 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 242787920 is about 15581.6533140742. The cubic root of 242787920 is about 623.8435532626.

The spelling of 242787920 in words is "two hundred forty-two million, seven hundred eighty-seven thousand, nine hundred twenty".