1249565 has 8 divisors (see below), whose sum is σ = 1518048. Its totient is φ = 987280.

The previous prime is 1249559. The next prime is 1249603. The reversal of 1249565 is 5659421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1249565 - 2¹⁴ = 1233181 is a prime.

It is a super-2 number, since 2×1249565² = 3122825378450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1091 + ... + 1920.

It is an arithmetic number, because the mean of its divisors is an integer number (189756).

2^1249565 is an apocalyptic number.

It is an amenable number.

1249565 is a deficient number, since it is larger than the sum of its proper divisors (268483).

1249565 is an equidigital number, since it uses as much as digits as its factorization.

1249565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3099.

The product of its digits is 10800, while the sum is 32.

The square root of 1249565 is about 1117.8394339081. The cubic root of 1249565 is about 107.7092373306.

It can be divided in two parts, 12495 and 65, that multiplied together give a triangular number (812175 = T₁₂₇₄).

The spelling of 1249565 in words is "one million, two hundred forty-nine thousand, five hundred sixty-five".