1249755 has 48 divisors (see below), whose sum is σ = 2371680. Its totient is φ = 559104.

The previous prime is 1249747. The next prime is 1249757. The reversal of 1249755 is 5579421.

It is not a de Polignac number, because 1249755 - 2³ = 1249747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43081 + ... + 43109.

It is an arithmetic number, because the mean of its divisors is an integer number (49410).

2^1249755 is an apocalyptic number.

1249755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1249755 is a deficient number, since it is larger than the sum of its proper divisors (1121925).

1249755 is a wasteful number, since it uses less digits than its factorization.

1249755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 67 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 1249755 is about 1117.9244160497. The cubic root of 1249755 is about 107.7146962218.

The spelling of 1249755 in words is "one million, two hundred forty-nine thousand, seven hundred fifty-five".