1223154 has 16 divisors (see below), whose sum is σ = 2718240. Its totient is φ = 407700.

The previous prime is 1223149. The next prime is 1223161. The reversal of 1223154 is 4513221.

It is a super-2 number, since 2×1223154² = 2992211415432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 11272 + ... + 11379.

It is an arithmetic number, because the mean of its divisors is an integer number (169890).

2^1223154 is an apocalyptic number.

1223154 is an abundant number, since it is smaller than the sum of its proper divisors (1495086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223154 is a wasteful number, since it uses less digits than its factorization.

1223154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22662 (or 22656 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 1223154 is about 1105.9629288543. The cubic root of 1223154 is about 106.9449741820.

Adding to 1223154 its reverse (4513221), we get a palindrome (5736375).

The spelling of 1223154 in words is "one million, two hundred twenty-three thousand, one hundred fifty-four".