13142438 has 4 divisors (see below), whose sum is σ = 19713660. Its totient is φ = 6571218.

The previous prime is 13142431. The next prime is 13142443. The reversal of 13142438 is 83424131.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13142431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3285608 + ... + 3285611.

It is an arithmetic number, because the mean of its divisors is an integer number (4928415).

Almost surely, 2^13142438 is an apocalyptic number.

13142438 is a deficient number, since it is larger than the sum of its proper divisors (6571222).

13142438 is an equidigital number, since it uses as much as digits as its factorization.

13142438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6571221.

The product of its digits is 2304, while the sum is 26.

The square root of 13142438 is about 3625.2500603407. The cubic root of 13142438 is about 235.9891190042.

Adding to 13142438 its reverse (83424131), we get a palindrome (96566569).

The spelling of 13142438 in words is "thirteen million, one hundred forty-two thousand, four hundred thirty-eight".