142220140 has 12 divisors (see below), whose sum is σ = 298662336. Its totient is φ = 56888048.

The previous prime is 142220137. The next prime is 142220153. The reversal of 142220140 is 41022241.

142220140 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, 3555484 + ... + 3555523.

It is an arithmetic number, because the mean of its divisors is an integer number (24888528).

Almost surely, 2^142220140 is an apocalyptic number.

142220140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142220140 is an abundant number, since it is smaller than the sum of its proper divisors (156442196).

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

142220140 is a wasteful number, since it uses less digits than its factorization.

142220140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7111016 (or 7111014 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 142220140 is about 11925.6085798587. The cubic root of 142220140 is about 521.9798047608.

Adding to 142220140 its reverse (41022241), we get a palindrome (183242381).

It can be divided in two parts, 1422201 and 40, that added together give a palindrome (1422241).

The spelling of 142220140 in words is "one hundred forty-two million, two hundred twenty thousand, one hundred forty".