2515842 has 48 divisors (see below), whose sum is σ = 6394752. Its totient is φ = 699840.

The previous prime is 2515817. The next prime is 2515853. The reversal of 2515842 is 2485152.

It is a happy number.

It is a congruent number.

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, 4923 + ... + 5409.

It is an arithmetic number, because the mean of its divisors is an integer number (133224).

2^2515842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2515842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3197376).

2515842 is an abundant number, since it is smaller than the sum of its proper divisors (3878910).

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

2515842 is a wasteful number, since it uses less digits than its factorization.

2515842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543 (or 540 counting only the distinct ones).

The product of its digits is 3200, while the sum is 27.

The square root of 2515842 is about 1586.1405990643. The cubic root of 2515842 is about 136.0069561033.

It can be divided in two parts, 25158 and 42, that added together give a triangular number (25200 = T₂₂₄).

The spelling of 2515842 in words is "two million, five hundred fifteen thousand, eight hundred forty-two".