840142110 has 16 divisors (see below), whose sum is σ = 2016341136. Its totient is φ = 224037888.

The previous prime is 840142109. The next prime is 840142117. The reversal of 840142110 is 11241048.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840142117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14002339 + ... + 14002398.

It is an arithmetic number, because the mean of its divisors is an integer number (126021321).

Almost surely, 2^840142110 is an apocalyptic number.

840142110 is an abundant number, since it is smaller than the sum of its proper divisors (1176199026).

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

840142110 is a wasteful number, since it uses less digits than its factorization.

840142110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28004747.

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 840142110 is about 28985.2050191128. The cubic root of 840142110 is about 943.5920019115.

Adding to 840142110 its reverse (11241048), we get a palindrome (851383158).

The spelling of 840142110 in words is "eight hundred forty million, one hundred forty-two thousand, one hundred ten".