1213420242 has 8 divisors (see below), whose sum is σ = 2426840496. Its totient is φ = 404473412.

The previous prime is 1213420231. The next prime is 1213420267. The reversal of 1213420242 is 2420243121.

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

1213420242 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101118348 + ... + 101118359.

It is an arithmetic number, because the mean of its divisors is an integer number (303355062).

Almost surely, 2^1213420242 is an apocalyptic number.

1213420242 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.

1213420242 is a wasteful number, since it uses less digits than its factorization.

1213420242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202236712.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1213420242 is about 34834.1820917328. The cubic root of 1213420242 is about 1066.6053191063.

Adding to 1213420242 its reverse (2420243121), we get a palindrome (3633663363).

The spelling of 1213420242 in words is "one billion, two hundred thirteen million, four hundred twenty thousand, two hundred forty-two".