1292252393 has 2 divisors, whose sum is σ = 1292252394. Its totient is φ = 1292252392.

The previous prime is 1292252387. The next prime is 1292252407. The reversal of 1292252393 is 3932522921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1218498649 + 73753744 = 34907^2 + 8588^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1292252393 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1292252893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 646126196 + 646126197.

It is an arithmetic number, because the mean of its divisors is an integer number (646126197).

Almost surely, 2^1292252393 is an apocalyptic number.

It is an amenable number.

1292252393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1292252393 is an equidigital number, since it uses as much as digits as its factorization.

1292252393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 38.

The square root of 1292252393 is about 35947.9122203223. The cubic root of 1292252393 is about 1089.2204377404.

It can be divided in two parts, 129 and 2252393, that added together give a palindrome (2252522).

The spelling of 1292252393 in words is "one billion, two hundred ninety-two million, two hundred fifty-two thousand, three hundred ninety-three".