13020442 has 4 divisors (see below), whose sum is σ = 19530666. Its totient is φ = 6510220.

The previous prime is 13020439. The next prime is 13020467. The reversal of 13020442 is 24402031.

13020442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 11485321 + 1535121 = 3389^2 + 1239^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3255109 + ... + 3255112.

Almost surely, 2^13020442 is an apocalyptic number.

13020442 is a deficient number, since it is larger than the sum of its proper divisors (6510224).

13020442 is an equidigital number, since it uses as much as digits as its factorization.

13020442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6510223.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 13020442 is about 3608.3849572904. The cubic root of 13020442 is about 235.2566503405.

Adding to 13020442 its reverse (24402031), we get a palindrome (37422473).

The spelling of 13020442 in words is "thirteen million, twenty thousand, four hundred forty-two".