13340402 has 4 divisors (see below), whose sum is σ = 20010606. Its totient is φ = 6670200.

The previous prime is 13340357. The next prime is 13340407. The reversal of 13340402 is 20404331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13256881 + 83521 = 3641^2 + 289^2 .

It is not an unprimeable number, because it can be changed into a prime (13340407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3335099 + ... + 3335102.

Almost surely, 2^13340402 is an apocalyptic number.

13340402 is a deficient number, since it is larger than the sum of its proper divisors (6670204).

13340402 is an equidigital number, since it uses as much as digits as its factorization.

13340402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6670203.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 13340402 is about 3652.4515054960. The cubic root of 13340402 is about 237.1681170516.

Adding to 13340402 its reverse (20404331), we get a palindrome (33744733).

The spelling of 13340402 in words is "thirteen million, three hundred forty thousand, four hundred two".