242905245 has 16 divisors (see below), whose sum is σ = 423980352. Its totient is φ = 117772160.

The previous prime is 242905241. The next prime is 242905249. The reversal of 242905245 is 542509242.

It is an interprime number because it is at equal distance from previous prime (242905241) and next prime (242905249).

It is not a de Polignac number, because 242905245 - 2² = 242905241 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242905241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 735912 + ... + 736241.

It is an arithmetic number, because the mean of its divisors is an integer number (26498772).

Almost surely, 2^242905245 is an apocalyptic number.

It is an amenable number.

242905245 is a deficient number, since it is larger than the sum of its proper divisors (181075107).

242905245 is a wasteful number, since it uses less digits than its factorization.

242905245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472172.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 242905245 is about 15585.4177037383. The cubic root of 242905245 is about 623.9440259415.

The spelling of 242905245 in words is "two hundred forty-two million, nine hundred five thousand, two hundred forty-five".