13542431 has 4 divisors (see below), whose sum is σ = 15477072. Its totient is φ = 11607792.

The previous prime is 13542413. The next prime is 13542433. The reversal of 13542431 is 13424531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13424531 = 2081 ⋅6451.

It is not a de Polignac number, because 13542431 - 2⁶ = 13542367 is a prime.

It is a super-2 number, since 2×13542431² = 366794874779522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13542397 and 13542406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13542433) 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, 967310 + ... + 967323.

It is an arithmetic number, because the mean of its divisors is an integer number (3869268).

Almost surely, 2^13542431 is an apocalyptic number.

13542431 is a deficient number, since it is larger than the sum of its proper divisors (1934641).

13542431 is an equidigital number, since it uses as much as digits as its factorization.

13542431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934640.

The product of its digits is 1440, while the sum is 23.

The square root of 13542431 is about 3680.0042119541. The cubic root of 13542431 is about 238.3593599084.

Adding to 13542431 its reverse (13424531), we get a palindrome (26966962).

The spelling of 13542431 in words is "thirteen million, five hundred forty-two thousand, four hundred thirty-one".