1223158 has 8 divisors (see below), whose sum is σ = 1839600. Its totient is φ = 609960.

The previous prime is 1223149. The next prime is 1223161. The reversal of 1223158 is 8513221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1223158² = 2992230985928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688 + ... + 1708.

It is an arithmetic number, because the mean of its divisors is an integer number (229950).

2^1223158 is an apocalyptic number.

1223158 is a deficient number, since it is larger than the sum of its proper divisors (616442).

1223158 is a wasteful number, since it uses less digits than its factorization.

1223158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622.

The product of its digits is 480, while the sum is 22.

The square root of 1223158 is about 1105.9647372317. The cubic root of 1223158 is about 106.9450907603.

Adding to 1223158 its reverse (8513221), we get a palindrome (9736379).

The spelling of 1223158 in words is "one million, two hundred twenty-three thousand, one hundred fifty-eight".