2491002 has 12 divisors (see below), whose sum is σ = 5397210. Its totient is φ = 830328.

The previous prime is 2491001. The next prime is 2491007. The reversal of 2491002 is 2001942.

It can be written as a sum of positive squares in only one way, i.e., 2461761 + 29241 = 1569^2 + 171^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 138389 = 2491002 / (2 + 4 + 9 + 1 + 0 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (2491001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69177 + ... + 69212.

2^2491002 is an apocalyptic number.

2491002 is an abundant number, since it is smaller than the sum of its proper divisors (2906208).

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

2491002 is a wasteful number, since it uses less digits than its factorization.

2491002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138397 (or 138394 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2491002 is about 1578.2908477210. The cubic root of 2491002 is about 135.5578562222.

Adding to 2491002 its reverse (2001942), we get a palindrome (4492944).

The spelling of 2491002 in words is "two million, four hundred ninety-one thousand, two".