1247967 has 40 divisors (see below), whose sum is σ = 2230272. Its totient is φ = 680400.

The previous prime is 1247959. The next prime is 1247969. The reversal of 1247967 is 7697421.

It is a happy number.

It is not a de Polignac number, because 1247967 - 2³ = 1247959 is a prime.

Its product of digits (21168) is a multiple of the sum of its prime divisors (112).

1247967 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1247969) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 17542 + ... + 17612.

2^1247967 is an apocalyptic number.

1247967 is a deficient number, since it is larger than the sum of its proper divisors (982305).

1247967 is an equidigital number, since it uses as much as digits as its factorization.

1247967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 112 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 1247967 is about 1117.1244335346. The cubic root of 1247967 is about 107.6633032696.

The spelling of 1247967 in words is "one million, two hundred forty-seven thousand, nine hundred sixty-seven".