242145423 has 16 divisors (see below), whose sum is σ = 386329440. Its totient is φ = 149012352.

The previous prime is 242145401. The next prime is 242145451. The reversal of 242145423 is 324541242.

242145423 is a `hidden beast` number, since 24 + 214 + 5 + 423 = 666.

It is not a de Polignac number, because 242145423 - 2⁵ = 242145391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242145223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344586 + ... + 345287.

It is an arithmetic number, because the mean of its divisors is an integer number (24145590).

Almost surely, 2^242145423 is an apocalyptic number.

242145423 is a deficient number, since it is larger than the sum of its proper divisors (144184017).

242145423 is a wasteful number, since it uses less digits than its factorization.

242145423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689895 (or 689889 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 242145423 is about 15561.0225563746. The cubic root of 242145423 is about 623.2927684495.

Adding to 242145423 its reverse (324541242), we get a palindrome (566686665).

The spelling of 242145423 in words is "two hundred forty-two million, one hundred forty-five thousand, four hundred twenty-three".