242908623 has 12 divisors (see below), whose sum is σ = 351110760. Its totient is φ = 161827056.

The previous prime is 242908621. The next prime is 242908637. The reversal of 242908623 is 326809242.

242908623 is a `hidden beast` number, since 2 + 4 + 29 + 0 + 8 + 623 = 666.

It is not a de Polignac number, because 242908623 - 2¹ = 242908621 is a prime.

It is a super-2 number, since 2×242908623² = 118009198255512258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242908621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5665 + ... + 22757.

It is an arithmetic number, because the mean of its divisors is an integer number (29259230).

Almost surely, 2^242908623 is an apocalyptic number.

242908623 is a deficient number, since it is larger than the sum of its proper divisors (108202137).

242908623 is a wasteful number, since it uses less digits than its factorization.

242908623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18678 (or 18675 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 242908623 is about 15585.5260738930. The cubic root of 242908623 is about 623.9469182534.

The spelling of 242908623 in words is "two hundred forty-two million, nine hundred eight thousand, six hundred twenty-three".