1213423242 has 8 divisors (see below), whose sum is σ = 2426846496. Its totient is φ = 404474412.

The previous prime is 1213423219. The next prime is 1213423243. The reversal of 1213423242 is 2423243121.

It is a happy number.

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

1213423242 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1213423243) 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, 101118598 + ... + 101118609.

It is an arithmetic number, because the mean of its divisors is an integer number (303355812).

Almost surely, 2^1213423242 is an apocalyptic number.

1213423242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1213423242 is a wasteful number, since it uses less digits than its factorization.

1213423242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202237212.

The product of its digits is 2304, while the sum is 24.

The square root of 1213423242 is about 34834.2251528579. The cubic root of 1213423242 is about 1066.6061981129.

Adding to 1213423242 its reverse (2423243121), we get a palindrome (3636666363).

The spelling of 1213423242 in words is "one billion, two hundred thirteen million, four hundred twenty-three thousand, two hundred forty-two".