13140442 has 16 divisors (see below), whose sum is σ = 22864320. Its totient is φ = 5547168.

The previous prime is 13140433. The next prime is 13140461. The reversal of 13140442 is 24404131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6067 + ... + 7942.

It is an arithmetic number, because the mean of its divisors is an integer number (1429020).

Almost surely, 2^13140442 is an apocalyptic number.

13140442 is a deficient number, since it is larger than the sum of its proper divisors (9723878).

13140442 is a wasteful number, since it uses less digits than its factorization.

13140442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14085.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 13140442 is about 3624.9747585328. The cubic root of 13140442 is about 235.9771714967.

Adding to 13140442 its reverse (24404131), we get a palindrome (37544573).

The spelling of 13140442 in words is "thirteen million, one hundred forty thousand, four hundred forty-two".