1212775 has 12 divisors (see below), whose sum is σ = 1519000. Its totient is φ = 960480.

The previous prime is 1212773. The next prime is 1212781. The reversal of 1212775 is 5772121.

It is a happy number.

It is not a de Polignac number, because 1212775 - 2¹ = 1212773 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an Ulam number.

1212775 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212773) 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, 3301 + ... + 3649.

2^1212775 is an apocalyptic number.

1212775 is a deficient number, since it is larger than the sum of its proper divisors (306225).

1212775 is a wasteful number, since it uses less digits than its factorization.

1212775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498 (or 493 counting only the distinct ones).

The product of its digits is 980, while the sum is 25.

The square root of 1212775 is about 1101.2606412653. The cubic root of 1212775 is about 106.6416228097.

Adding to 1212775 its reverse (5772121), we get a palindrome (6984896).

The spelling of 1212775 in words is "one million, two hundred twelve thousand, seven hundred seventy-five".