1249418 has 4 divisors (see below), whose sum is σ = 1874130. Its totient is φ = 624708.

The previous prime is 1249411. The next prime is 1249427. The reversal of 1249418 is 8149421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8149421 = 7 ⋅1164203.

It can be written as a sum of positive squares in only one way, i.e., 1067089 + 182329 = 1033^2 + 427^2 .

It is a super-2 number, since 2×1249418² = 3122090677448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1249411) 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, 312353 + ... + 312356.

2^1249418 is an apocalyptic number.

1249418 is a deficient number, since it is larger than the sum of its proper divisors (624712).

1249418 is an equidigital number, since it uses as much as digits as its factorization.

1249418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624711.

The product of its digits is 2304, while the sum is 29.

The square root of 1249418 is about 1117.7736801339. The cubic root of 1249418 is about 107.7050134930.

The spelling of 1249418 in words is "one million, two hundred forty-nine thousand, four hundred eighteen".