840660102 has 24 divisors (see below), whose sum is σ = 1838144880. Its totient is φ = 277648560.

The previous prime is 840660101. The next prime is 840660127. The reversal of 840660102 is 201066048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840660101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 212274 + ... + 216197.

It is an arithmetic number, because the mean of its divisors is an integer number (76589370).

Almost surely, 2^840660102 is an apocalyptic number.

840660102 is an abundant number, since it is smaller than the sum of its proper divisors (997484778).

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

840660102 is a wasteful number, since it uses less digits than its factorization.

840660102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428588 (or 428585 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 840660102 is about 28994.1390974107. The cubic root of 840660102 is about 943.7858868449.

The spelling of 840660102 in words is "eight hundred forty million, six hundred sixty thousand, one hundred two".