242590 has 16 divisors (see below), whose sum is σ = 462672. Its totient is φ = 91264.

The previous prime is 242551. The next prime is 242591. The reversal of 242590 is 95242.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544 + ... + 883.

It is an arithmetic number, because the mean of its divisors is an integer number (28917).

2²⁴²⁵⁹⁰ is an apocalyptic number.

242590 is a deficient number, since it is larger than the sum of its proper divisors (220082).

242590 is a wasteful number, since it uses less digits than its factorization.

242590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 242590 is about 492.5342627676. The cubic root of 242590 is about 62.3673988700.

The spelling of 242590 in words is "two hundred forty-two thousand, five hundred ninety".