2103402440 has 32 divisors (see below), whose sum is σ = 4938425280. Its totient is φ = 804779712.

The previous prime is 2103402437. The next prime is 2103402479. The reversal of 2103402440 is 442043012.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1142234 + ... + 1144073.

It is an arithmetic number, because the mean of its divisors is an integer number (154325790).

Almost surely, 2^2103402440 is an apocalyptic number.

2103402440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2103402440 is an abundant number, since it is smaller than the sum of its proper divisors (2835022840).

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

2103402440 is a wasteful number, since it uses less digits than its factorization.

2103402440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2286341 (or 2286337 counting only the distinct ones).

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

The square root of 2103402440 is about 45862.8655886219. The cubic root of 2103402440 is about 1281.2703939962.

Adding to 2103402440 its reverse (442043012), we get a palindrome (2545445452).

The spelling of 2103402440 in words is "two billion, one hundred three million, four hundred two thousand, four hundred forty".