1252739 has 2 divisors, whose sum is σ = 1252740. Its totient is φ = 1252738.

The previous prime is 1252729. The next prime is 1252751. The reversal of 1252739 is 9372521.

It is a weak prime.

It is an emirp because it is prime and its reverse (9372521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1252739 - 2⁸ = 1252483 is a prime.

It is not a weakly prime, because it can be changed into another prime (1252729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626369 + 626370.

It is an arithmetic number, because the mean of its divisors is an integer number (626370).

2^1252739 is an apocalyptic number.

1252739 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252739 is an equidigital number, since it uses as much as digits as its factorization.

1252739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 29.

The square root of 1252739 is about 1119.2582365120. The cubic root of 1252739 is about 107.8003570585.

It can be divided in two parts, 1252 and 739, that added together give a palindrome (1991).

The spelling of 1252739 in words is "one million, two hundred fifty-two thousand, seven hundred thirty-nine".