142242220 has 12 divisors (see below), whose sum is σ = 298708704. Its totient is φ = 56896880.

The previous prime is 142242211. The next prime is 142242259. The reversal of 142242220 is 22242241.

142242220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3556036 + ... + 3556075.

It is an arithmetic number, because the mean of its divisors is an integer number (24892392).

Almost surely, 2^142242220 is an apocalyptic number.

142242220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142242220 is an abundant number, since it is smaller than the sum of its proper divisors (156466484).

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

142242220 is a wasteful number, since it uses less digits than its factorization.

142242220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7112120 (or 7112118 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 142242220 is about 11926.5342828502. The cubic root of 142242220 is about 522.0068162134.

Adding to 142242220 its reverse (22242241), we get a palindrome (164484461).

The spelling of 142242220 in words is "one hundred forty-two million, two hundred forty-two thousand, two hundred twenty".