242755491 has 24 divisors (see below), whose sum is σ = 365736384. Its totient is φ = 142035040.

The previous prime is 242755489. The next prime is 242755507. The reversal of 242755491 is 194557242.

It is not a de Polignac number, because 242755491 - 2¹ = 242755489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242755091) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23380 + ... + 32126.

It is an arithmetic number, because the mean of its divisors is an integer number (15239016).

Almost surely, 2^242755491 is an apocalyptic number.

242755491 is a deficient number, since it is larger than the sum of its proper divisors (122980893).

242755491 is a wasteful number, since it uses less digits than its factorization.

242755491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8819 (or 8790 counting only the distinct ones).

The product of its digits is 100800, while the sum is 39.

The square root of 242755491 is about 15580.6126644622. The cubic root of 242755491 is about 623.8157765877.

The spelling of 242755491 in words is "two hundred forty-two million, seven hundred fifty-five thousand, four hundred ninety-one".