142012220 has 48 divisors (see below), whose sum is σ = 360884160. Its totient is φ = 45825024.

The previous prime is 142012207. The next prime is 142012223. The reversal of 142012220 is 22210241.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 142012195 and 142012204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142012223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27455 + ... + 32214.

It is an arithmetic number, because the mean of its divisors is an integer number (7518420).

Almost surely, 2^142012220 is an apocalyptic number.

142012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142012220 is an abundant number, since it is smaller than the sum of its proper divisors (218871940).

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

142012220 is a wasteful number, since it uses less digits than its factorization.

142012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59702 (or 59700 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 142012220 is about 11916.8880165923. Note that the first 3 decimals coincide. The cubic root of 142012220 is about 521.7253096923.

Adding to 142012220 its reverse (22210241), we get a palindrome (164222461).

The spelling of 142012220 in words is "one hundred forty-two million, twelve thousand, two hundred twenty".