2100402320 has 40 divisors (see below), whose sum is σ = 5095763136. Its totient is φ = 803631488.

The previous prime is 2100402319. The next prime is 2100402323. The reversal of 2100402320 is 232040012.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×2100402320² = 8823379811722764800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2100402295 and 2100402304.

It is not an unprimeable number, because it can be changed into a prime (2100402323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 568922 + ... + 572601.

Almost surely, 2^2100402320 is an apocalyptic number.

2100402320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100402320 is an abundant number, since it is smaller than the sum of its proper divisors (2995360816).

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

2100402320 is a wasteful number, since it uses less digits than its factorization.

2100402320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141559 (or 1141553 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 2100402320 is about 45830.1464104142. The cubic root of 2100402320 is about 1280.6609379577.

Adding to 2100402320 its reverse (232040012), we get a palindrome (2332442332).

The spelling of 2100402320 in words is "two billion, one hundred million, four hundred two thousand, three hundred twenty".