1247441 has 4 divisors (see below), whose sum is σ = 1343412. Its totient is φ = 1151472.

The previous prime is 1247429. The next prime is 1247447. The reversal of 1247441 is 1447421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1447421 = 31 ⋅46691.

It can be written as a sum of positive squares in 2 ways, for example, as 384400 + 863041 = 620^2 + 929^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1247441 is a prime.

It is a super-2 number, since 2×1247441² = 3112218096962, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1247447) 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, 47966 + ... + 47991.

It is an arithmetic number, because the mean of its divisors is an integer number (335853).

2^1247441 is an apocalyptic number.

It is an amenable number.

1247441 is a deficient number, since it is larger than the sum of its proper divisors (95971).

1247441 is an equidigital number, since it uses as much as digits as its factorization.

1247441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95970.

The product of its digits is 896, while the sum is 23.

The square root of 1247441 is about 1116.8889828448. Note that the first 3 decimals coincide. The cubic root of 1247441 is about 107.6481749701.

The spelling of 1247441 in words is "one million, two hundred forty-seven thousand, four hundred forty-one".