442403013 has 8 divisors (see below), whose sum is σ = 635245408. Its totient is φ = 272247984.

The previous prime is 442403009. The next prime is 442403021. The reversal of 442403013 is 310304244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 442403013 - 2² = 442403009 is a prime.

It is a super-2 number, since 2×442403013² = 391440851822956338, which 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 (442404013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5671795 + ... + 5671872.

It is an arithmetic number, because the mean of its divisors is an integer number (79405676).

Almost surely, 2^442403013 is an apocalyptic number.

It is an amenable number.

442403013 is a deficient number, since it is larger than the sum of its proper divisors (192842395).

442403013 is a wasteful number, since it uses less digits than its factorization.

442403013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11343683.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 442403013 is about 21033.3785445895. The cubic root of 442403013 is about 761.9726070160.

Adding to 442403013 its reverse (310304244), we get a palindrome (752707257).

The spelling of 442403013 in words is "four hundred forty-two million, four hundred three thousand, thirteen".