2102242340 has 24 divisors (see below), whose sum is σ = 4816046592. Its totient is φ = 764451680.

The previous prime is 2102242301. The next prime is 2102242349. The reversal of 2102242340 is 432422012.

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

It is not an unprimeable number, because it can be changed into a prime (2102242349) 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, 4777604 + ... + 4778043.

It is an arithmetic number, because the mean of its divisors is an integer number (200668608).

Almost surely, 2^2102242340 is an apocalyptic number.

2102242340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102242340 is an abundant number, since it is smaller than the sum of its proper divisors (2713804252).

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

2102242340 is a wasteful number, since it uses less digits than its factorization.

2102242340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9555667 (or 9555665 counting only the distinct ones).

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

The square root of 2102242340 is about 45850.2163571776. The cubic root of 2102242340 is about 1281.0347955349.

Adding to 2102242340 its reverse (432422012), we get a palindrome (2534664352).

It can be divided in two parts, 2102 and 242340, that added together give a palindrome (244442).

The spelling of 2102242340 in words is "two billion, one hundred two million, two hundred forty-two thousand, three hundred forty".