1212623 has 4 divisors (see below), whose sum is σ = 1216248. Its totient is φ = 1209000.

The previous prime is 1212613. The next prime is 1212641. The reversal of 1212623 is 3262121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3262121 = 797 ⋅4093.

It is a cyclic number.

It is not a de Polignac number, because 1212623 - 2¹⁰ = 1211599 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1253 + ... + 1998.

It is an arithmetic number, because the mean of its divisors is an integer number (304062).

2^1212623 is an apocalyptic number.

1212623 is a deficient number, since it is larger than the sum of its proper divisors (3625).

1212623 is an equidigital number, since it uses as much as digits as its factorization.

1212623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3624.

The product of its digits is 144, while the sum is 17.

The square root of 1212623 is about 1101.1916272838. The cubic root of 1212623 is about 106.6371674068.

Adding to 1212623 its reverse (3262121), we get a palindrome (4474744).

It can be divided in two parts, 121 and 2623, that added together give a cube (2744 = 14³).

The spelling of 1212623 in words is "one million, two hundred twelve thousand, six hundred twenty-three".