1223420229 has 6 divisors (see below), whose sum is σ = 1767162566. Its totient is φ = 815613480.

The previous prime is 1223420183. The next prime is 1223420243. The reversal of 1223420229 is 9220243221.

1223420229 is a `hidden beast` number, since 12 + 2 + 3 + 420 + 229 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1122116004 + 101304225 = 33498^2 + 10065^2 .

It is not a de Polignac number, because 1223420229 - 2¹¹ = 1223418181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223420299) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67967782 + ... + 67967799.

Almost surely, 2^1223420229 is an apocalyptic number.

It is an amenable number.

1223420229 is a deficient number, since it is larger than the sum of its proper divisors (543742337).

1223420229 is a wasteful number, since it uses less digits than its factorization.

1223420229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135935587 (or 135935584 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1223420229 is about 34977.4245621372. The cubic root of 1223420229 is about 1069.5273275482.

The spelling of 1223420229 in words is "one billion, two hundred twenty-three million, four hundred twenty thousand, two hundred twenty-nine".