142191210 has 64 divisors (see below), whose sum is σ = 391163904. Its totient is φ = 32404800.

The previous prime is 142191197. The next prime is 142191229. The reversal of 142191210 is 12191241.

It is a happy number.

142191210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89725 + ... + 91295.

It is an arithmetic number, because the mean of its divisors is an integer number (6111936).

Almost surely, 2^142191210 is an apocalyptic number.

142191210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 142191210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195581952).

142191210 is an abundant number, since it is smaller than the sum of its proper divisors (248972694).

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

142191210 is a wasteful number, since it uses less digits than its factorization.

142191210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2019.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 142191210 is about 11924.3955821668. The cubic root of 142191210 is about 521.9444091649.

The spelling of 142191210 in words is "one hundred forty-two million, one hundred ninety-one thousand, two hundred ten".