242145554 has 24 divisors (see below), whose sum is σ = 424060848. Its totient is φ = 103398120.

The previous prime is 242145511. The next prime is 242145559. The reversal of 242145554 is 455541242.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 242145554.

It is not an unprimeable number, because it can be changed into a prime (242145559) 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, 23369 + ... + 32099.

It is an arithmetic number, because the mean of its divisors is an integer number (17669202).

Almost surely, 2^242145554 is an apocalyptic number.

242145554 is a deficient number, since it is larger than the sum of its proper divisors (181915294).

242145554 is a wasteful number, since it uses less digits than its factorization.

242145554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9030 (or 9023 counting only the distinct ones).

The product of its digits is 32000, while the sum is 32.

The square root of 242145554 is about 15561.0267656090. The cubic root of 242145554 is about 623.2928808494.

Adding to 242145554 its reverse (455541242), we get a palindrome (697686796).

The spelling of 242145554 in words is "two hundred forty-two million, one hundred forty-five thousand, five hundred fifty-four".