1223213042 has 8 divisors (see below), whose sum is σ = 1851653100. Its totient is φ = 605995344.

The previous prime is 1223213041. The next prime is 1223213051. The reversal of 1223213042 is 2403123221.

It can be written as a sum of positive squares in 2 ways, for example, as 1211109601 + 12103441 = 34801^2 + 3479^2 .

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

It is a super-2 number, since 2×1223213042² = 2992500292237787528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1223213041) 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, 2805317 + ... + 2805752.

Almost surely, 2^1223213042 is an apocalyptic number.

1223213042 is a deficient number, since it is larger than the sum of its proper divisors (628440058).

1223213042 is a wasteful number, since it uses less digits than its factorization.

1223213042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5611180.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1223213042 is about 34974.4627120990. The cubic root of 1223213042 is about 1069.4669490935.

Adding to 1223213042 its reverse (2403123221), we get a palindrome (3626336263).

The spelling of 1223213042 in words is "one billion, two hundred twenty-three million, two hundred thirteen thousand, forty-two".