1234420432 has 20 divisors (see below), whose sum is σ = 2733359776. Its totient is φ = 529037280.

The previous prime is 1234420399. The next prime is 1234420433. The reversal of 1234420432 is 2340244321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1234420397 and 1234420406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234420433) by changing a digit.

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, 5510694 + ... + 5510917.

Almost surely, 2^1234420432 is an apocalyptic number.

It is an amenable number.

1234420432 is an abundant number, since it is smaller than the sum of its proper divisors (1498939344).

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

1234420432 is a wasteful number, since it uses less digits than its factorization.

1234420432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11021626 (or 11021620 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 1234420432 is about 35134.3198596472. The cubic root of 1234420432 is about 1072.7232672001.

Adding to 1234420432 its reverse (2340244321), we get a palindrome (3574664753).

The spelling of 1234420432 in words is "one billion, two hundred thirty-four million, four hundred twenty thousand, four hundred thirty-two".