1292261 has 2 divisors, whose sum is σ = 1292262. Its totient is φ = 1292260.

The previous prime is 1292257. The next prime is 1292281. The reversal of 1292261 is 1622921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1060900 + 231361 = 1030^2 + 481^2 .

It is a cyclic number.

It is not a de Polignac number, because 1292261 - 2² = 1292257 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1292251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646130 + 646131.

It is an arithmetic number, because the mean of its divisors is an integer number (646131).

2^1292261 is an apocalyptic number.

It is an amenable number.

1292261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1292261 is an equidigital number, since it uses as much as digits as its factorization.

1292261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 23.

The square root of 1292261 is about 1136.7765831508. The cubic root of 1292261 is about 108.9222855973.

The spelling of 1292261 in words is "one million, two hundred ninety-two thousand, two hundred sixty-one".