1292491 has 2 divisors, whose sum is σ = 1292492. Its totient is φ = 1292490.

The previous prime is 1292477. The next prime is 1292503. The reversal of 1292491 is 1942921.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1292491 - 2¹⁹ = 768203 is a prime.

1292491 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1292441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646245 + 646246.

It is an arithmetic number, because the mean of its divisors is an integer number (646246).

2^1292491 is an apocalyptic number.

1292491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1292491 is an equidigital number, since it uses as much as digits as its factorization.

1292491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 28.

The square root of 1292491 is about 1136.8777418878. The cubic root of 1292491 is about 108.9287473052.

The spelling of 1292491 in words is "one million, two hundred ninety-two thousand, four hundred ninety-one".