1253749 has 4 divisors (see below), whose sum is σ = 1432864. Its totient is φ = 1074636.

The previous prime is 1253741. The next prime is 1253761. The reversal of 1253749 is 9473521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9473521 = 2441 ⋅3881.

It is a cyclic number.

It is not a de Polignac number, because 1253749 - 2³ = 1253741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1253749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89547 + ... + 89560.

It is an arithmetic number, because the mean of its divisors is an integer number (358216).

2^1253749 is an apocalyptic number.

It is an amenable number.

1253749 is a deficient number, since it is larger than the sum of its proper divisors (179115).

1253749 is an equidigital number, since it uses as much as digits as its factorization.

1253749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179114.

The product of its digits is 7560, while the sum is 31.

The square root of 1253749 is about 1119.7093372836. The cubic root of 1253749 is about 107.8293200250.

It can be divided in two parts, 1253 and 749, that added together give a palindrome (2002).

The spelling of 1253749 in words is "one million, two hundred fifty-three thousand, seven hundred forty-nine".