13220542 has 12 divisors (see below), whose sum is σ = 20930616. Its totient is φ = 6262020.

The previous prime is 13220533. The next prime is 13220551. The reversal of 13220542 is 24502231.

It is an interprime number because it is at equal distance from previous prime (13220533) and next prime (13220551).

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8434 + ... + 9877.

It is an arithmetic number, because the mean of its divisors is an integer number (1744218).

Almost surely, 2^13220542 is an apocalyptic number.

13220542 is a deficient number, since it is larger than the sum of its proper divisors (7710074).

13220542 is a wasteful number, since it uses less digits than its factorization.

13220542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18351 (or 18332 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 13220542 is about 3636.0063256271. The cubic root of 13220542 is about 236.4556813915.

Adding to 13220542 its reverse (24502231), we get a palindrome (37722773).

The spelling of 13220542 in words is "thirteen million, two hundred twenty thousand, five hundred forty-two".