442505144250231 has 4 divisors (see below), whose sum is σ = 590006859000312. Its totient is φ = 295003429500152.

The previous prime is 442505144250223. The next prime is 442505144250241. The reversal of 442505144250231 is 132052441505244.

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

It is a cyclic number.

It is not a de Polignac number, because 442505144250231 - 2³ = 442505144250223 is a prime.

It is a super-2 number, since 2×442505144250231² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442505144250241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73750857375036 + ... + 73750857375041.

It is an arithmetic number, because the mean of its divisors is an integer number (147501714750078).

Almost surely, 2^{442505144250231} is an apocalyptic number.

442505144250231 is a deficient number, since it is larger than the sum of its proper divisors (147501714750081).

442505144250231 is a wasteful number, since it uses less digits than its factorization.

442505144250231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147501714750080.

The product of its (nonzero) digits is 768000, while the sum is 42.

Adding to 442505144250231 its reverse (132052441505244), we get a palindrome (574557585755475).

The spelling of 442505144250231 in words is "four hundred forty-two trillion, five hundred five billion, one hundred forty-four million, two hundred fifty thousand, two hundred thirty-one".