1240149 has 8 divisors (see below), whose sum is σ = 1740640. Its totient is φ = 783216.

The previous prime is 1240139. The next prime is 1240153. The reversal of 1240149 is 9410421.

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

It is not a de Polignac number, because 1240149 - 2⁵ = 1240117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240139) 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 7 ways as a sum of consecutive naturals, for example, 10822 + ... + 10935.

It is an arithmetic number, because the mean of its divisors is an integer number (217580).

2^1240149 is an apocalyptic number.

1240149 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1240149 is a deficient number, since it is larger than the sum of its proper divisors (500491).

1240149 is a wasteful number, since it uses less digits than its factorization.

1240149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21779.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1240149 is about 1113.6197735313. The cubic root of 1240149 is about 107.4380100508.

The spelling of 1240149 in words is "one million, two hundred forty thousand, one hundred forty-nine".