442042413 has 4 divisors (see below), whose sum is σ = 589389888. Its totient is φ = 294694940.

The previous prime is 442042409. The next prime is 442042421. The reversal of 442042413 is 314240244.

It is a happy number.

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 442042413 - 2² = 442042409 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442042453) 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, 73673733 + ... + 73673738.

It is an arithmetic number, because the mean of its divisors is an integer number (147347472).

Almost surely, 2^442042413 is an apocalyptic number.

It is an amenable number.

442042413 is a deficient number, since it is larger than the sum of its proper divisors (147347475).

442042413 is a wasteful number, since it uses less digits than its factorization.

442042413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147347474.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 442042413 is about 21024.8047077731. The cubic root of 442042413 is about 761.7655243323.

Adding to 442042413 its reverse (314240244), we get a palindrome (756282657).

The spelling of 442042413 in words is "four hundred forty-two million, forty-two thousand, four hundred thirteen".