2113420440 has 96 divisors (see below), whose sum is σ = 6499293840. Its totient is φ = 549780480.

The previous prime is 2113420423. The next prime is 2113420469. The reversal of 2113420440 is 440243112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196482 + ... + 206958.

Almost surely, 2^2113420440 is an apocalyptic number.

2113420440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2113420440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3249646920).

2113420440 is an abundant number, since it is smaller than the sum of its proper divisors (4385873400).

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

2113420440 is a wasteful number, since it uses less digits than its factorization.

2113420440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10573 (or 10528 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2113420440 is about 45971.9527538259. The cubic root of 2113420440 is about 1283.3013007503.

Adding to 2113420440 its reverse (440243112), we get a palindrome (2553663552).

The spelling of 2113420440 in words is "two billion, one hundred thirteen million, four hundred twenty thousand, four hundred forty".