2104210042 has 16 divisors (see below), whose sum is σ = 3457548864. Its totient is φ = 952488000.

The previous prime is 2104210021. The next prime is 2104210061. The reversal of 2104210042 is 2400124012.

It is a junction number, because it is equal to n+sod(n) for n = 2104209998 and 2104210025.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193134 + ... + 203737.

It is an arithmetic number, because the mean of its divisors is an integer number (216096804).

Almost surely, 2^2104210042 is an apocalyptic number.

2104210042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2104210042 is a deficient number, since it is larger than the sum of its proper divisors (1353338822).

2104210042 is a wasteful number, since it uses less digits than its factorization.

2104210042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397125.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 2104210042 is about 45871.6692741827. The cubic root of 2104210042 is about 1281.4343543983.

Adding to 2104210042 its reverse (2400124012), we get a palindrome (4504334054).

The spelling of 2104210042 in words is "two billion, one hundred four million, two hundred ten thousand, forty-two".