242942784 has 280 divisors, whose sum is σ = 819595008. Its totient is φ = 63221760.

The previous prime is 242942779. The next prime is 242942807. The reversal of 242942784 is 487249242.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7836849 + ... + 7836879.

Almost surely, 2^242942784 is an apocalyptic number.

242942784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242942784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (409797504).

242942784 is an abundant number, since it is smaller than the sum of its proper divisors (576652224).

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

242942784 is an equidigital number, since it uses as much as digits as its factorization.

242942784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 60 counting only the distinct ones).

The product of its digits is 258048, while the sum is 42.

The square root of 242942784 is about 15586.6219560237. The cubic root of 242942784 is about 623.9761660851.

The spelling of 242942784 in words is "two hundred forty-two million, nine hundred forty-two thousand, seven hundred eighty-four".