442230140 has 24 divisors (see below), whose sum is σ = 1013109552. Its totient is φ = 160810880.

The previous prime is 442230137. The next prime is 442230143. The reversal of 442230140 is 41032244.

It is an interprime number because it is at equal distance from previous prime (442230137) and next prime (442230143).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442230143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1004849 + ... + 1005288.

It is an arithmetic number, because the mean of its divisors is an integer number (42212898).

Almost surely, 2^442230140 is an apocalyptic number.

It is an amenable number.

442230140 is an abundant number, since it is smaller than the sum of its proper divisors (570879412).

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

442230140 is a wasteful number, since it uses less digits than its factorization.

442230140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010157 (or 2010155 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 442230140 is about 21029.2686510967. The cubic root of 442230140 is about 761.8733448442.

Adding to 442230140 its reverse (41032244), we get a palindrome (483262384).

The spelling of 442230140 in words is "four hundred forty-two million, two hundred thirty thousand, one hundred forty".