442104621 has 16 divisors (see below), whose sum is σ = 677979264. Its totient is φ = 251020224.

The previous prime is 442104589. The next prime is 442104631. The reversal of 442104621 is 126401244.

It is a happy number.

It is not a de Polignac number, because 442104621 - 2⁵ = 442104589 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 442104591 and 442104600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442104631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63750 + ... + 70343.

It is an arithmetic number, because the mean of its divisors is an integer number (42373704).

Almost surely, 2^442104621 is an apocalyptic number.

It is an amenable number.

442104621 is a deficient number, since it is larger than the sum of its proper divisors (235874643).

442104621 is a wasteful number, since it uses less digits than its factorization.

442104621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134260.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 442104621 is about 21026.2840511584. The cubic root of 442104621 is about 761.8012567158.

Adding to 442104621 its reverse (126401244), we get a palindrome (568505865).

The spelling of 442104621 in words is "four hundred forty-two million, one hundred four thousand, six hundred twenty-one".