242401123 has 4 divisors (see below), whose sum is σ = 242519688. Its totient is φ = 242282560.

The previous prime is 242401073. The next prime is 242401193. The reversal of 242401123 is 321104242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242401123 is a prime.

It is a super-2 number, since 2×242401123² = 117516608863322258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242401123.

It is not an unprimeable number, because it can be changed into a prime (242401193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56161 + ... + 60322.

It is an arithmetic number, because the mean of its divisors is an integer number (60629922).

Almost surely, 2^242401123 is an apocalyptic number.

242401123 is a deficient number, since it is larger than the sum of its proper divisors (118565).

242401123 is a wasteful number, since it uses less digits than its factorization.

242401123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118564.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 242401123 is about 15569.2364295748. The cubic root of 242401123 is about 623.5120855479.

Adding to 242401123 its reverse (321104242), we get a palindrome (563505365).

The spelling of 242401123 in words is "two hundred forty-two million, four hundred one thousand, one hundred twenty-three".