142107220 has 12 divisors (see below), whose sum is σ = 298425204. Its totient is φ = 56842880.

The previous prime is 142107209. The next prime is 142107239. The reversal of 142107220 is 22701241.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 111260304 + 30846916 = 10548^2 + 5554^2 .

It is a super-2 number, since 2×142107220² = 40388923952256800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3552661 + ... + 3552700.

It is an arithmetic number, because the mean of its divisors is an integer number (24868767).

Almost surely, 2^142107220 is an apocalyptic number.

142107220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142107220 is an abundant number, since it is smaller than the sum of its proper divisors (156317984).

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

142107220 is a wasteful number, since it uses less digits than its factorization.

142107220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7105370 (or 7105368 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 142107220 is about 11920.8732901579. The cubic root of 142107220 is about 521.8416209423.

Adding to 142107220 its reverse (22701241), we get a palindrome (164808461).

The spelling of 142107220 in words is "one hundred forty-two million, one hundred seven thousand, two hundred twenty".