4120423440 has 80 divisors (see below), whose sum is σ = 14598077568. Its totient is φ = 941810688.

The previous prime is 4120423427. The next prime is 4120423441. The reversal of 4120423440 is 443240214.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 4120423440.

It is not an unprimeable number, because it can be changed into a prime (4120423441) 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, 1224637 + ... + 1227996.

Almost surely, 2^4120423440 is an apocalyptic number.

4120423440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4120423440 is an abundant number, since it is smaller than the sum of its proper divisors (10477654128).

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

4120423440 is a wasteful number, since it uses less digits than its factorization.

4120423440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2452656 (or 2452650 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 4120423440 is about 64190.5245343890. The cubic root of 4120423440 is about 1603.1738354840.

Adding to 4120423440 its reverse (443240214), we get a palindrome (4563663654).

The spelling of 4120423440 in words is "four billion, one hundred twenty million, four hundred twenty-three thousand, four hundred forty".