2109142458 has 48 divisors (see below), whose sum is σ = 4787729856. Its totient is φ = 669768000.

The previous prime is 2109142447. The next prime is 2109142463. The reversal of 2109142458 is 8542419012.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93766 + ... + 114062.

It is an arithmetic number, because the mean of its divisors is an integer number (99744372).

Almost surely, 2^2109142458 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2109142458, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2393864928).

2109142458 is an abundant number, since it is smaller than the sum of its proper divisors (2678587398).

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

2109142458 is a wasteful number, since it uses less digits than its factorization.

2109142458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20579 (or 20576 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 2109142458 is about 45925.4010107696. The cubic root of 2109142458 is about 1282.4348304265.

The spelling of 2109142458 in words is "two billion, one hundred nine million, one hundred forty-two thousand, four hundred fifty-eight".