2491742 has 16 divisors (see below), whose sum is σ = 4156272. Its totient is φ = 1110720.

The previous prime is 2491729. The next prime is 2491757. The reversal of 2491742 is 2471942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98 + ... + 2234.

It is an arithmetic number, because the mean of its divisors is an integer number (259767).

2^2491742 is an apocalyptic number.

2491742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2491742 is a deficient number, since it is larger than the sum of its proper divisors (1664530).

2491742 is a wasteful number, since it uses less digits than its factorization.

2491742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2203.

The product of its digits is 4032, while the sum is 29.

The square root of 2491742 is about 1578.5252611219. The cubic root of 2491742 is about 135.5712782484.

It can be divided in two parts, 249 and 1742, that added together give a palindrome (1991).

The spelling of 2491742 in words is "two million, four hundred ninety-one thousand, seven hundred forty-two".