442241123 has 2 divisors, whose sum is σ = 442241124. Its totient is φ = 442241122.

The previous prime is 442241117. The next prime is 442241153. The reversal of 442241123 is 321142244.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442241123 is a prime.

It is a super-2 number, since 2×442241123² = 391154421744602258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (442241153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221120561 + 221120562.

It is an arithmetic number, because the mean of its divisors is an integer number (221120562).

Almost surely, 2^442241123 is an apocalyptic number.

442241123 is a deficient number, since it is larger than the sum of its proper divisors (1).

442241123 is an equidigital number, since it uses as much as digits as its factorization.

442241123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 23.

The square root of 442241123 is about 21029.5297855183. The cubic root of 442241123 is about 761.8796519566.

Adding to 442241123 its reverse (321142244), we get a palindrome (763383367).

The spelling of 442241123 in words is "four hundred forty-two million, two hundred forty-one thousand, one hundred twenty-three".