1247164 has 6 divisors (see below), whose sum is σ = 2182544. Its totient is φ = 623580.

The previous prime is 1247119. The next prime is 1247167. The reversal of 1247164 is 4617421.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1247167) 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 as a sum of consecutive naturals, namely, 155892 + ... + 155899.

2^1247164 is an apocalyptic number.

It is an amenable number.

1247164 is a deficient number, since it is larger than the sum of its proper divisors (935380).

1247164 is a wasteful number, since it uses less digits than its factorization.

1247164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311795 (or 311793 counting only the distinct ones).

The product of its digits is 1344, while the sum is 25.

The square root of 1247164 is about 1116.7649707973. The cubic root of 1247164 is about 107.6402064565.

The spelling of 1247164 in words is "one million, two hundred forty-seven thousand, one hundred sixty-four".