442111660 has 12 divisors (see below), whose sum is σ = 928434528. Its totient is φ = 176844656.

The previous prime is 442111633. The next prime is 442111661. The reversal of 442111660 is 66111244.

It is not an unprimeable number, because it can be changed into a prime (442111661) 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, 11052772 + ... + 11052811.

It is an arithmetic number, because the mean of its divisors is an integer number (77369544).

Almost surely, 2^442111660 is an apocalyptic number.

It is an amenable number.

442111660 is an abundant number, since it is smaller than the sum of its proper divisors (486322868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442111660 is a wasteful number, since it uses less digits than its factorization.

442111660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22105592 (or 22105590 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 442111660 is about 21026.4514362267. The cubic root of 442111660 is about 761.8052997185.

The spelling of 442111660 in words is "four hundred forty-two million, one hundred eleven thousand, six hundred sixty".