13021142 has 4 divisors (see below), whose sum is σ = 19531716. Its totient is φ = 6510570.

The previous prime is 13021139. The next prime is 13021163. The reversal of 13021142 is 24112031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24112031 = 191 ⋅126241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3255284 + ... + 3255287.

It is an arithmetic number, because the mean of its divisors is an integer number (4882929).

Almost surely, 2^13021142 is an apocalyptic number.

13021142 is a deficient number, since it is larger than the sum of its proper divisors (6510574).

13021142 is an equidigital number, since it uses as much as digits as its factorization.

13021142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6510573.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 13021142 is about 3608.4819522896. The cubic root of 13021142 is about 235.2608661909.

Adding to 13021142 its reverse (24112031), we get a palindrome (37133173).

The spelling of 13021142 in words is "thirteen million, twenty-one thousand, one hundred forty-two".