13402424234 has 24 divisors (see below), whose sum is σ = 20863111500. Its totient is φ = 6452545536.

The previous prime is 13402424227. The next prime is 13402424239. The reversal of 13402424234 is 43242420431.

It can be written as a sum of positive squares in 6 ways, for example, as 10877864209 + 2524560025 = 104297^2 + 50245^2 .

It is a super-2 number, since 2×13402424234² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13402424197 and 13402424206.

It is not an unprimeable number, because it can be changed into a prime (13402424239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 686642 + ... + 705890.

Almost surely, 2^13402424234 is an apocalyptic number.

13402424234 is a deficient number, since it is larger than the sum of its proper divisors (7460687266).

13402424234 is an equidigital number, since it uses as much as digits as its factorization.

13402424234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19482 (or 19385 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 13402424234 its reverse (43242420431), we get a palindrome (56644844665).

The spelling of 13402424234 in words is "thirteen billion, four hundred two million, four hundred twenty-four thousand, two hundred thirty-four".