440420130 has 48 divisors (see below), whose sum is σ = 1146318264. Its totient is φ = 117319680.

The previous prime is 440420111. The next prime is 440420137. The reversal of 440420130 is 31024044.

It can be written as a sum of positive squares in 4 ways, for example, as 206238321 + 234181809 = 14361^2 + 15303^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (440420137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107520 + ... + 111540.

Almost surely, 2^440420130 is an apocalyptic number.

440420130 is an abundant number, since it is smaller than the sum of its proper divisors (705898134).

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

440420130 is a wasteful number, since it uses less digits than its factorization.

440420130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5251 (or 5248 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 440420130 is about 20986.1890299311. The cubic root of 440420130 is about 760.8324961158.

Adding to 440420130 its reverse (31024044), we get a palindrome (471444174).

The spelling of 440420130 in words is "four hundred forty million, four hundred twenty thousand, one hundred thirty".