13424020402 has 8 divisors (see below), whose sum is σ = 21684956076. Its totient is φ = 6195701712.

The previous prime is 13424020399. The next prime is 13424020409. The reversal of 13424020402 is 20402042431.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12998052081 + 425968321 = 114009^2 + 20639^2 .

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

It is not an unprimeable number, because it can be changed into a prime (13424020409) 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, 258154213 + ... + 258154264.

Almost surely, 2^13424020402 is an apocalyptic number.

13424020402 is a deficient number, since it is larger than the sum of its proper divisors (8260935674).

13424020402 is a wasteful number, since it uses less digits than its factorization.

13424020402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516308492.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 13424020402 its reverse (20402042431), we get a palindrome (33826062833).

The spelling of 13424020402 in words is "thirteen billion, four hundred twenty-four million, twenty thousand, four hundred two".