242537490 has 160 divisors (see below), whose sum is σ = 725953536. Its totient is φ = 57697920.

The previous prime is 242537467. The next prime is 242537497. The reversal of 242537490 is 94735242.

It is not an unprimeable number, because it can be changed into a prime (242537497) 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 79 ways as a sum of consecutive naturals, for example, 326059 + ... + 326801.

Almost surely, 2^242537490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242537490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362976768).

242537490 is an abundant number, since it is smaller than the sum of its proper divisors (483416046).

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

242537490 is a wasteful number, since it uses less digits than its factorization.

242537490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806 (or 797 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 242537490 is about 15573.6151872325. The cubic root of 242537490 is about 623.6289861795.

The spelling of 242537490 in words is "two hundred forty-two million, five hundred thirty-seven thousand, four hundred ninety".