142212140 has 48 divisors (see below), whose sum is σ = 361392192. Its totient is φ = 45889536.

The previous prime is 142212139. The next prime is 142212179. The reversal of 142212140 is 41212241.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27497 + ... + 32256.

It is an arithmetic number, because the mean of its divisors is an integer number (7529004).

Almost surely, 2^142212140 is an apocalyptic number.

142212140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142212140 is an abundant number, since it is smaller than the sum of its proper divisors (219180052).

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

142212140 is a wasteful number, since it uses less digits than its factorization.

142212140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59786 (or 59784 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 142212140 is about 11925.2731624898. The cubic root of 142212140 is about 521.9700173126.

Adding to 142212140 its reverse (41212241), we get a palindrome (183424381).

It can be divided in two parts, 14221 and 2140, that added together give a palindrome (16361).

The spelling of 142212140 in words is "one hundred forty-two million, two hundred twelve thousand, one hundred forty".