1273429061 has 2 divisors, whose sum is σ = 1273429062. Its totient is φ = 1273429060.

The previous prime is 1273429051. The next prime is 1273429097. The reversal of 1273429061 is 1609243721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 722588161 + 550840900 = 26881^2 + 23470^2 .

It is a cyclic number.

It is not a de Polignac number, because 1273429061 - 2²⁶ = 1206320197 is a prime.

It is a Sophie Germain 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 (1273429021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636714530 + 636714531.

It is an arithmetic number, because the mean of its divisors is an integer number (636714531).

Almost surely, 2^1273429061 is an apocalyptic number.

It is an amenable number.

1273429061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1273429061 is an equidigital number, since it uses as much as digits as its factorization.

1273429061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 1273429061 is about 35685.1378167438. The cubic root of 1273429061 is about 1083.9059131971.

The spelling of 1273429061 in words is "one billion, two hundred seventy-three million, four hundred twenty-nine thousand, sixty-one".