1232420442 has 16 divisors (see below), whose sum is σ = 2688917472. Its totient is φ = 373460720.

The previous prime is 1232420369. The next prime is 1232420443. The reversal of 1232420442 is 2440242321.

It is not an unprimeable number, because it can be changed into a prime (1232420443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9336453 + ... + 9336584.

It is an arithmetic number, because the mean of its divisors is an integer number (168057342).

Almost surely, 2^1232420442 is an apocalyptic number.

1232420442 is an abundant number, since it is smaller than the sum of its proper divisors (1456497030).

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

1232420442 is a wasteful number, since it uses less digits than its factorization.

1232420442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18673053.

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 1232420442 is about 35105.8462652590. The cubic root of 1232420442 is about 1072.1436171707.

Adding to 1232420442 its reverse (2440242321), we get a palindrome (3672662763).

The spelling of 1232420442 in words is "one billion, two hundred thirty-two million, four hundred twenty thousand, four hundred forty-two".