1249538 has 4 divisors (see below), whose sum is σ = 1874310. Its totient is φ = 624768.

The previous prime is 1249531. The next prime is 1249559. The reversal of 1249538 is 8359421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8359421 = 7 ⋅1194203.

It can be written as a sum of positive squares in only one way, i.e., 1247689 + 1849 = 1117^2 + 43^2 .

It is a super-2 number, since 2×1249538² = 3122690426888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312383 + ... + 312386.

2^1249538 is an apocalyptic number.

1249538 is a deficient number, since it is larger than the sum of its proper divisors (624772).

1249538 is an equidigital number, since it uses as much as digits as its factorization.

1249538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624771.

The product of its digits is 8640, while the sum is 32.

The square root of 1249538 is about 1117.8273569742. The cubic root of 1249538 is about 107.7084615485.

The spelling of 1249538 in words is "one million, two hundred forty-nine thousand, five hundred thirty-eight".