1212867 has 16 divisors (see below), whose sum is σ = 1860000. Its totient is φ = 780192.

The previous prime is 1212857. The next prime is 1212877. The reversal of 1212867 is 7682121.

It is an interprime number because it is at equal distance from previous prime (1212857) and next prime (1212877).

It is not a de Polignac number, because 1212867 - 2⁴ = 1212851 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1212867.

It is not an unprimeable number, because it can be changed into a prime (1212817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9 + ... + 1557.

It is an arithmetic number, because the mean of its divisors is an integer number (116250).

2^1212867 is an apocalyptic number.

1212867 is a deficient number, since it is larger than the sum of its proper divisors (647133).

1212867 is a wasteful number, since it uses less digits than its factorization.

1212867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587 (or 1581 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 1212867 is about 1101.3024107846. The cubic root of 1212867 is about 106.6443193202.

Adding to 1212867 its reverse (7682121), we get a palindrome (8894988).

The spelling of 1212867 in words is "one million, two hundred twelve thousand, eight hundred sixty-seven".