1249641 has 16 divisors (see below), whose sum is σ = 1912320. Its totient is φ = 805680.

The previous prime is 1249631. The next prime is 1249643. The reversal of 1249641 is 1469421.

1249641 is a `hidden beast` number, since 12 + 4 + 9 + 641 = 666.

It is not a de Polignac number, because 1249641 - 2¹⁷ = 1118569 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1249643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91 + ... + 1583.

It is an arithmetic number, because the mean of its divisors is an integer number (119520).

2^1249641 is an apocalyptic number.

It is an amenable number.

1249641 is a deficient number, since it is larger than the sum of its proper divisors (662679).

1249641 is a wasteful number, since it uses less digits than its factorization.

1249641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533 (or 1527 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 1249641 is about 1117.8734275400. The cubic root of 1249641 is about 107.7114209535.

The spelling of 1249641 in words is "one million, two hundred forty-nine thousand, six hundred forty-one".