2691442 has 16 divisors (see below), whose sum is σ = 4421592. Its totient is φ = 1221120.

The previous prime is 2691439. The next prime is 2691443. The reversal of 2691442 is 2441962.

It can be written as a sum of positive squares in 4 ways, for example, as 1846881 + 844561 = 1359^2 + 919^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2691442.

It is not an unprimeable number, because it can be changed into a prime (2691443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 738 + ... + 2434.

2^2691442 is an apocalyptic number.

2691442 is a deficient number, since it is larger than the sum of its proper divisors (1730150).

2691442 is a wasteful number, since it uses less digits than its factorization.

2691442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773.

The product of its digits is 3456, while the sum is 28.

The square root of 2691442 is about 1640.5614892469. The cubic root of 2691442 is about 139.1003881193.

It can be divided in two parts, 269 and 1442, that added together give a triangular number (1711 = T₅₈).

The spelling of 2691442 in words is "two million, six hundred ninety-one thousand, four hundred forty-two".