2102399040 has 112 divisors (see below), whose sum is σ = 7628729472. Its totient is φ = 480546816.

The previous prime is 2102399011. The next prime is 2102399041. The reversal of 2102399040 is 409932012.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2102398989 and 2102399007.

It is not an unprimeable number, because it can be changed into a prime (2102399041) 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, 149709 + ... + 163148.

It is an arithmetic number, because the mean of its divisors is an integer number (68113656).

Almost surely, 2^2102399040 is an apocalyptic number.

2102399040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102399040 is an abundant number, since it is smaller than the sum of its proper divisors (5526330432).

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

2102399040 is a wasteful number, since it uses less digits than its factorization.

2102399040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312884 (or 312874 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 2102399040 is about 45851.9251504231. The cubic root of 2102399040 is about 1281.0666239562.

The spelling of 2102399040 in words is "two billion, one hundred two million, three hundred ninety-nine thousand, forty".