442043513 has 4 divisors (see below), whose sum is σ = 443069568. Its totient is φ = 441017460.

The previous prime is 442043461. The next prime is 442043527. The reversal of 442043513 is 315340244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 442043513 - 2⁸ = 442043257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442043573) 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, 512381 + ... + 513242.

It is an arithmetic number, because the mean of its divisors is an integer number (110767392).

Almost surely, 2^442043513 is an apocalyptic number.

It is an amenable number.

442043513 is a deficient number, since it is larger than the sum of its proper divisors (1026055).

442043513 is a wasteful number, since it uses less digits than its factorization.

442043513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026054.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 442043513 is about 21024.8308673340. The cubic root of 442043513 is about 761.7661562034.

Adding to 442043513 its reverse (315340244), we get a palindrome (757383757).

The spelling of 442043513 in words is "four hundred forty-two million, forty-three thousand, five hundred thirteen".