13533442 has 16 divisors (see below), whose sum is σ = 21966840. Its totient is φ = 6216192.

The previous prime is 13533439. The next prime is 13533449. The reversal of 13533442 is 24433531.

It can be written as a sum of positive squares in 4 ways, for example, as 13388281 + 145161 = 3659^2 + 381^2 .

It is not an unprimeable number, because it can be changed into a prime (13533449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4818 + ... + 7090.

Almost surely, 2^13533442 is an apocalyptic number.

13533442 is a deficient number, since it is larger than the sum of its proper divisors (8433398).

13533442 is a wasteful number, since it uses less digits than its factorization.

13533442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2517.

The product of its digits is 4320, while the sum is 25.

The square root of 13533442 is about 3678.7826790937. The cubic root of 13533442 is about 238.3066099867.

Adding to 13533442 its reverse (24433531), we get a palindrome (37966973).

The spelling of 13533442 in words is "thirteen million, five hundred thirty-three thousand, four hundred forty-two".