2115405342 has 64 divisors (see below), whose sum is σ = 4863006720. Its totient is φ = 680918400.

The previous prime is 2115405317. The next prime is 2115405367. The reversal of 2115405342 is 2435045112.

2115405342 is a `hidden beast` number, since 211 + 5 + 405 + 3 + 42 = 666.

It is an interprime number because it is at equal distance from previous prime (2115405317) and next prime (2115405367).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 991617 + ... + 993747.

It is an arithmetic number, because the mean of its divisors is an integer number (75984480).

Almost surely, 2^2115405342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2115405342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2431503360).

2115405342 is an abundant number, since it is smaller than the sum of its proper divisors (2747601378).

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

2115405342 is a wasteful number, since it uses less digits than its factorization.

2115405342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2766 (or 2760 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 2115405342 is about 45993.5358719027. The cubic root of 2115405342 is about 1283.7029293525.

The spelling of 2115405342 in words is "two billion, one hundred fifteen million, four hundred five thousand, three hundred forty-two".