220142512 has 20 divisors (see below), whose sum is σ = 448975480. Its totient is φ = 104277888.

The previous prime is 220142471. The next prime is 220142513. The reversal of 220142512 is 215241022.

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

It is a self number, because there is not a number n which added to its sum of digits gives 220142512.

It is not an unprimeable number, because it can be changed into a prime (220142513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361773 + ... + 362380.

It is an arithmetic number, because the mean of its divisors is an integer number (22448774).

Almost surely, 2^220142512 is an apocalyptic number.

It is an amenable number.

220142512 is an abundant number, since it is smaller than the sum of its proper divisors (228832968).

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

220142512 is a wasteful number, since it uses less digits than its factorization.

220142512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724180 (or 724174 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 220142512 is about 14837.2002749845. The cubic root of 220142512 is about 603.8113967513.

Adding to 220142512 its reverse (215241022), we get a palindrome (435383534).

The spelling of 220142512 in words is "two hundred twenty million, one hundred forty-two thousand, five hundred twelve".