442685405 has 16 divisors (see below), whose sum is σ = 545529600. Its totient is φ = 344653440.

The previous prime is 442685401. The next prime is 442685431. The reversal of 442685405 is 504586244.

It is not a de Polignac number, because 442685405 - 2² = 442685401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442685401) 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, 87536 + ... + 92454.

It is an arithmetic number, because the mean of its divisors is an integer number (34095600).

Almost surely, 2^442685405 is an apocalyptic number.

It is an amenable number.

442685405 is a deficient number, since it is larger than the sum of its proper divisors (102844195).

442685405 is a wasteful number, since it uses less digits than its factorization.

442685405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5404.

The product of its (nonzero) digits is 153600, while the sum is 38.

The square root of 442685405 is about 21040.0904228095. The cubic root of 442685405 is about 762.1346984389.

The spelling of 442685405 in words is "four hundred forty-two million, six hundred eighty-five thousand, four hundred five".