1249922 has 4 divisors (see below), whose sum is σ = 1874886. Its totient is φ = 624960.

The previous prime is 1249921. The next prime is 1249939. The reversal of 1249922 is 2299421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2299421 = 733 ⋅3137.

It can be written as a sum of positive squares in only one way, i.e., 866761 + 383161 = 931^2 + 619^2 .

It is not an unprimeable number, because it can be changed into a prime (1249921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312479 + ... + 312482.

2^1249922 is an apocalyptic number.

1249922 is a deficient number, since it is larger than the sum of its proper divisors (624964).

1249922 is an equidigital number, since it uses as much as digits as its factorization.

1249922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624963.

The product of its digits is 2592, while the sum is 29.

The square root of 1249922 is about 1117.9991055453. Note that the first 3 decimals coincide. The cubic root of 1249922 is about 107.7194938429.

It can be divided in two parts, 12499 and 22, that added together give a palindrome (12521).

The spelling of 1249922 in words is "one million, two hundred forty-nine thousand, nine hundred twenty-two".