440102420 has 48 divisors (see below), whose sum is σ = 971338368. Its totient is φ = 167287680.

The previous prime is 440102413. The next prime is 440102423. The reversal of 440102420 is 24201044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440102423) 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, 24905 + ... + 38735.

It is an arithmetic number, because the mean of its divisors is an integer number (20236216).

Almost surely, 2^440102420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 440102420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (485669184).

440102420 is an abundant number, since it is smaller than the sum of its proper divisors (531235948).

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

440102420 is a wasteful number, since it uses less digits than its factorization.

440102420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13920 (or 13918 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 440102420 is about 20978.6181623099. The cubic root of 440102420 is about 760.6495024816.

Adding to 440102420 its reverse (24201044), we get a palindrome (464303464).

It can be divided in two parts, 4401024 and 20, that added together give a palindrome (4401044).

The spelling of 440102420 in words is "four hundred forty million, one hundred two thousand, four hundred twenty".