1249491 has 4 divisors (see below), whose sum is σ = 1665992. Its totient is φ = 832992.

The previous prime is 1249489. The next prime is 1249499. The reversal of 1249491 is 1949421.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1249491 - 2¹ = 1249489 is a prime.

It is a super-3 number, since 3×1249491³ = 5852220101765633313, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a D-number.

It is a Duffinian number.

1249491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1249499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208246 + ... + 208251.

It is an arithmetic number, because the mean of its divisors is an integer number (416498).

2^1249491 is an apocalyptic number.

1249491 is a deficient number, since it is larger than the sum of its proper divisors (416501).

1249491 is an equidigital number, since it uses as much as digits as its factorization.

1249491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416500.

The product of its digits is 2592, while the sum is 30.

The square root of 1249491 is about 1117.8063338522. The cubic root of 1249491 is about 107.7071110864.

The spelling of 1249491 in words is "one million, two hundred forty-nine thousand, four hundred ninety-one".