1292291 has 16 divisors (see below), whose sum is σ = 1736448. Its totient is φ = 928800.

The previous prime is 1292281. The next prime is 1292293. The reversal of 1292291 is 1922921.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1292291 is a prime.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1292291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1292293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356 + ... + 1646.

It is an arithmetic number, because the mean of its divisors is an integer number (108528).

2^1292291 is an apocalyptic number.

1292291 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1292291 is a deficient number, since it is larger than the sum of its proper divisors (444157).

1292291 is a wasteful number, since it uses less digits than its factorization.

1292291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322.

The product of its digits is 648, while the sum is 26.

The square root of 1292291 is about 1136.7897782792. The cubic root of 1292291 is about 108.9231284722.

It can be divided in two parts, 1 and 292291, that added together give a palindrome (292292).

The spelling of 1292291 in words is "one million, two hundred ninety-two thousand, two hundred ninety-one".