1240147 has 4 divisors (see below), whose sum is σ = 1263600. Its totient is φ = 1216696.

The previous prime is 1240139. The next prime is 1240153. The reversal of 1240147 is 7410421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7410421 = 179 ⋅41399.

It is a cyclic number.

It is not a de Polignac number, because 1240147 - 2³ = 1240139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240117) 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 3 ways as a sum of consecutive naturals, for example, 11647 + ... + 11752.

It is an arithmetic number, because the mean of its divisors is an integer number (315900).

2^1240147 is an apocalyptic number.

1240147 is a deficient number, since it is larger than the sum of its proper divisors (23453).

1240147 is an equidigital number, since it uses as much as digits as its factorization.

1240147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23452.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 1240147 is about 1113.6188755584. The cubic root of 1240147 is about 107.4379522954.

Adding to 1240147 its reverse (7410421), we get a palindrome (8650568).

The spelling of 1240147 in words is "one million, two hundred forty thousand, one hundred forty-seven".