442153420 has 24 divisors (see below), whose sum is σ = 929610864. Its totient is φ = 176654016.

The previous prime is 442153381. The next prime is 442153433. The reversal of 442153420 is 24351244.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5142 + ... + 30178.

It is an arithmetic number, because the mean of its divisors is an integer number (38733786).

Almost surely, 2^442153420 is an apocalyptic number.

It is an amenable number.

442153420 is an abundant number, since it is smaller than the sum of its proper divisors (487457444).

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

442153420 is a wasteful number, since it uses less digits than its factorization.

442153420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25929 (or 25927 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 442153420 is about 21027.4444476736. Note that the first 5 decimals coincide. The cubic root of 442153420 is about 761.8292846003.

The spelling of 442153420 in words is "four hundred forty-two million, one hundred fifty-three thousand, four hundred twenty".