2100010042 has 16 divisors (see below), whose sum is σ = 3393096840. Its totient is φ = 969014592.

The previous prime is 2100010039. The next prime is 2100010057. The reversal of 2100010042 is 2400100012.

It can be written as a sum of positive squares in 4 ways, for example, as 1986395761 + 113614281 = 44569^2 + 10659^2 .

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, 182368 + ... + 193540.

Almost surely, 2^2100010042 is an apocalyptic number.

2100010042 is a deficient number, since it is larger than the sum of its proper divisors (1293086798).

2100010042 is a wasteful number, since it uses less digits than its factorization.

2100010042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18417.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2100010042 is about 45825.8665166301. The cubic root of 2100010042 is about 1280.5812061868.

Adding to 2100010042 its reverse (2400100012), we get a palindrome (4500110054).

The spelling of 2100010042 in words is "two billion, one hundred million, ten thousand, forty-two".