102029840 has 120 divisors (see below), whose sum is σ = 273893184. Its totient is φ = 34988800.

The previous prime is 102029839. The next prime is 102029857. The reversal of 102029840 is 48920201.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1437005 + ... + 1437075.

Almost surely, 2^102029840 is an apocalyptic number.

102029840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102029840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136946592).

102029840 is an abundant number, since it is smaller than the sum of its proper divisors (171863344).

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

102029840 is a wasteful number, since it uses less digits than its factorization.

102029840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 102029840 is about 10100.9821304663. The cubic root of 102029840 is about 467.2784312328.

The spelling of 102029840 in words is "one hundred two million, twenty-nine thousand, eight hundred forty".