1253722 has 4 divisors (see below), whose sum is σ = 1880586. Its totient is φ = 626860.

The previous prime is 1253717. The next prime is 1253723. The reversal of 1253722 is 2273521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2273521 = 19 ⋅119659.

It can be written as a sum of positive squares in only one way, i.e., 829921 + 423801 = 911^2 + 651^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1253693 and 1253702.

It is not an unprimeable number, because it can be changed into a prime (1253723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313429 + ... + 313432.

2^1253722 is an apocalyptic number.

1253722 is a deficient number, since it is larger than the sum of its proper divisors (626864).

1253722 is an equidigital number, since it uses as much as digits as its factorization.

1253722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626863.

The product of its digits is 840, while the sum is 22.

The square root of 1253722 is about 1119.6972805183. The cubic root of 1253722 is about 107.8285459699.

The spelling of 1253722 in words is "one million, two hundred fifty-three thousand, seven hundred twenty-two".