2499138 has 12 divisors (see below), whose sum is σ = 5414838. Its totient is φ = 833040.

The previous prime is 2499137. The next prime is 2499139. The reversal of 2499138 is 8319942.

It is an interprime number because it is at equal distance from previous prime (2499137) and next prime (2499139).

It can be written as a sum of positive squares in only one way, i.e., 2442969 + 56169 = 1563^2 + 237^2 .

It is not an unprimeable number, because it can be changed into a prime (2499137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69403 + ... + 69438.

2^2499138 is an apocalyptic number.

2499138 is an abundant number, since it is smaller than the sum of its proper divisors (2915700).

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

2499138 is a wasteful number, since it uses less digits than its factorization.

2499138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138849 (or 138846 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 2499138 is about 1580.8662182487. The cubic root of 2499138 is about 135.7052801833.

The spelling of 2499138 in words is "two million, four hundred ninety-nine thousand, one hundred thirty-eight".