2102420344 has 16 divisors (see below), whose sum is σ = 3980311920. Its totient is φ = 1041003840.

The previous prime is 2102420339. The next prime is 2102420347. The reversal of 2102420344 is 4430242012.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102420347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1274917 + ... + 1276564.

It is an arithmetic number, because the mean of its divisors is an integer number (248769495).

Almost surely, 2^2102420344 is an apocalyptic number.

It is an amenable number.

2102420344 is a deficient number, since it is larger than the sum of its proper divisors (1877891576).

2102420344 is a wasteful number, since it uses less digits than its factorization.

2102420344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551590 (or 2551586 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 2102420344 is about 45852.1574628719. The cubic root of 2102420344 is about 1281.0709510370.

Adding to 2102420344 its reverse (4430242012), we get a palindrome (6532662356).

The spelling of 2102420344 in words is "two billion, one hundred two million, four hundred twenty thousand, three hundred forty-four".