102000438 has 16 divisors (see below), whose sum is σ = 226667760. Its totient is φ = 34000128.

The previous prime is 102000433. The next prime is 102000449. The reversal of 102000438 is 834000201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 102000438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102000433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 944395 + ... + 944502.

It is an arithmetic number, because the mean of its divisors is an integer number (14166735).

Almost surely, 2^102000438 is an apocalyptic number.

102000438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

102000438 is an abundant number, since it is smaller than the sum of its proper divisors (124667322).

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

102000438 is a wasteful number, since it uses less digits than its factorization.

102000438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888908 (or 1888902 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 102000438 is about 10099.5266225700. The cubic root of 102000438 is about 467.2335416189.

Adding to 102000438 its reverse (834000201), we get a palindrome (936000639).

The spelling of 102000438 in words is "one hundred two million, four hundred thirty-eight", and thus it is an aban number.