442041415 has 4 divisors (see below), whose sum is σ = 530449704. Its totient is φ = 353633128.

The previous prime is 442041401. The next prime is 442041433. The reversal of 442041415 is 514140244.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442041415 is a prime.

It is a super-2 number, since 2×442041415² = 390801225150404450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442041415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44204137 + ... + 44204146.

It is an arithmetic number, because the mean of its divisors is an integer number (132612426).

Almost surely, 2^442041415 is an apocalyptic number.

442041415 is a deficient number, since it is larger than the sum of its proper divisors (88408289).

442041415 is an equidigital number, since it uses as much as digits as its factorization.

442041415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88408288.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 442041415 is about 21024.7809738889. The cubic root of 442041415 is about 761.7649510521.

Adding to 442041415 its reverse (514140244), we get a palindrome (956181659).

The spelling of 442041415 in words is "four hundred forty-two million, forty-one thousand, four hundred fifteen".