2100042109 has 8 divisors (see below), whose sum is σ = 2339699328. Its totient is φ = 1868508960.

The previous prime is 2100042107. The next prime is 2100042121. The reversal of 2100042109 is 9012400012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2100042109 - 2¹ = 2100042107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100042101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2030472 + ... + 2031505.

It is an arithmetic number, because the mean of its divisors is an integer number (292462416).

Almost surely, 2^2100042109 is an apocalyptic number.

It is an amenable number.

2100042109 is a deficient number, since it is larger than the sum of its proper divisors (239657219).

2100042109 is a wasteful number, since it uses less digits than its factorization.

2100042109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4062035.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 2100042109 is about 45826.2163941122. The cubic root of 2100042109 is about 1280.5877242808.

The spelling of 2100042109 in words is "two billion, one hundred million, forty-two thousand, one hundred nine".