442040423413 has 4 divisors (see below), whose sum is σ = 442133902540. Its totient is φ = 441946944288.

The previous prime is 442040423401. The next prime is 442040423443. The reversal of 442040423413 is 314324040244.

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

It can be written as a sum of positive squares in 2 ways, for example, as 45131603364 + 396908820049 = 212442^2 + 630007^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442040423413 is a prime.

It is a super-2 number, since 2×442040423413² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442040423443) 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, 46732470 + ... + 46741927.

It is an arithmetic number, because the mean of its divisors is an integer number (110533475635).

Almost surely, 2^442040423413 is an apocalyptic number.

It is an amenable number.

442040423413 is a deficient number, since it is larger than the sum of its proper divisors (93479127).

442040423413 is an equidigital number, since it uses as much as digits as its factorization.

442040423413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93479126.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 442040423413 its reverse (314324040244), we get a palindrome (756364463657).

The spelling of 442040423413 in words is "four hundred forty-two billion, forty million, four hundred twenty-three thousand, four hundred thirteen".