2102402442 has 32 divisors (see below), whose sum is σ = 4873181184. Its totient is φ = 592225200.

The previous prime is 2102402441. The next prime is 2102402443. The reversal of 2102402442 is 2442042012.

It is an interprime number because it is at equal distance from previous prime (2102402441) and next prime (2102402443).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (2102402441) 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, 349534 + ... + 355497.

It is an arithmetic number, because the mean of its divisors is an integer number (152286912).

Almost surely, 2^2102402442 is an apocalyptic number.

2102402442 is an abundant number, since it is smaller than the sum of its proper divisors (2770778742).

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

2102402442 is a wasteful number, since it uses less digits than its factorization.

2102402442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705114.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 2102402442 is about 45851.9622480870. The cubic root of 2102402442 is about 1281.0673149425.

Adding to 2102402442 its reverse (2442042012), we get a palindrome (4544444454).

The spelling of 2102402442 in words is "two billion, one hundred two million, four hundred two thousand, four hundred forty-two".