1213047 has 12 divisors (see below), whose sum is σ = 1911624. Its totient is φ = 735120.

The previous prime is 1213033. The next prime is 1213049. The reversal of 1213047 is 7403121.

It is not a de Polignac number, because 1213047 - 2⁷ = 1212919 is a prime.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6028 + ... + 6225.

It is an arithmetic number, because the mean of its divisors is an integer number (159302).

2^1213047 is an apocalyptic number.

1213047 is a deficient number, since it is larger than the sum of its proper divisors (698577).

1213047 is a wasteful number, since it uses less digits than its factorization.

1213047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12270 (or 12267 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 1213047 is about 1101.3841291756. The cubic root of 1213047 is about 106.6495947070.

Adding to 1213047 its reverse (7403121), we get a palindrome (8616168).

The spelling of 1213047 in words is "one million, two hundred thirteen thousand, forty-seven".