2102040342 has 32 divisors (see below), whose sum is σ = 4737000960. Its totient is φ = 690810120.

The previous prime is 2102040341. The next prime is 2102040349. The reversal of 2102040342 is 2430402012.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102040341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270298 + ... + 277965.

It is an arithmetic number, because the mean of its divisors is an integer number (148031280).

Almost surely, 2^2102040342 is an apocalyptic number.

2102040342 is an abundant number, since it is smaller than the sum of its proper divisors (2634960618).

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

2102040342 is a wasteful number, since it uses less digits than its factorization.

2102040342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548345 (or 548339 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2102040342 is about 45848.0135011322. The cubic root of 2102040342 is about 1280.9937639896.

Adding to 2102040342 its reverse (2430402012), we get a palindrome (4532442354).

The spelling of 2102040342 in words is "two billion, one hundred two million, forty thousand, three hundred forty-two".