1252429397 has 2 divisors, whose sum is σ = 1252429398. Its totient is φ = 1252429396.

The previous prime is 1252429393. The next prime is 1252429417. The reversal of 1252429397 is 7939242521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1218428836 + 34000561 = 34906^2 + 5831^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252429397 - 2² = 1252429393 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252429393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626214698 + 626214699.

It is an arithmetic number, because the mean of its divisors is an integer number (626214699).

Almost surely, 2^1252429397 is an apocalyptic number.

It is an amenable number.

1252429397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252429397 is an equidigital number, since it uses as much as digits as its factorization.

1252429397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 44.

The square root of 1252429397 is about 35389.6792440960. The cubic root of 1252429397 is about 1077.9147570231.

The spelling of 1252429397 in words is "one billion, two hundred fifty-two million, four hundred twenty-nine thousand, three hundred ninety-seven".