14542220 has 144 divisors (see below), whose sum is σ = 41368320. Its totient is φ = 4233600.

The previous prime is 14542219. The next prime is 14542237. The reversal of 14542220 is 2224541.

It is a happy number.

It is a super-2 number, since 2×14542220² = 422952325056800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 14542192 and 14542201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 204785 + ... + 204855.

It is an arithmetic number, because the mean of its divisors is an integer number (287280).

Almost surely, 2^14542220 is an apocalyptic number.

14542220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 14542220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20684160).

14542220 is an abundant number, since it is smaller than the sum of its proper divisors (26826100).

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

14542220 is a wasteful number, since it uses less digits than its factorization.

14542220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 14542220 is about 3813.4262809185. The cubic root of 14542220 is about 244.0863933074.

Adding to 14542220 its reverse (2224541), we get a palindrome (16766761).

The spelling of 14542220 in words is "fourteen million, five hundred forty-two thousand, two hundred twenty".