13543842 has 32 divisors (see below), whose sum is σ = 29514240. Its totient is φ = 4118400.

The previous prime is 13543811. The next prime is 13543843. The reversal of 13543842 is 24834531.

13543842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13543842² = 366871312241928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13543843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5967 + ... + 7917.

It is an arithmetic number, because the mean of its divisors is an integer number (922320).

Almost surely, 2^13543842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13543842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14757120).

13543842 is an abundant number, since it is smaller than the sum of its proper divisors (15970398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13543842 is a wasteful number, since it uses less digits than its factorization.

13543842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2058.

The product of its digits is 11520, while the sum is 30.

The square root of 13543842 is about 3680.1959186978. The cubic root of 13543842 is about 238.3676379243.

The spelling of 13543842 in words is "thirteen million, five hundred forty-three thousand, eight hundred forty-two".