1234232421 has 16 divisors (see below), whose sum is σ = 1700909184. Its totient is φ = 795472704.

The previous prime is 1234232413. The next prime is 1234232429. The reversal of 1234232421 is 1242324321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1234232413) and next prime (1234232429).

It is not a de Polignac number, because 1234232421 - 2³ = 1234232413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1234232391 and 1234232400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234232429) 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 15 ways as a sum of consecutive naturals, for example, 17985 + ... + 52838.

It is an arithmetic number, because the mean of its divisors is an integer number (106306824).

Almost surely, 2^1234232421 is an apocalyptic number.

It is an amenable number.

1234232421 is a deficient number, since it is larger than the sum of its proper divisors (466676763).

1234232421 is a wasteful number, since it uses less digits than its factorization.

1234232421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71020.

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

The square root of 1234232421 is about 35131.6441545226. The cubic root of 1234232421 is about 1072.6688033106.

Adding to 1234232421 its reverse (1242324321), we get a palindrome (2476556742).

The spelling of 1234232421 in words is "one billion, two hundred thirty-four million, two hundred thirty-two thousand, four hundred twenty-one".