100512342 has 48 divisors (see below), whose sum is σ = 250522272. Its totient is φ = 28529280.

The previous prime is 100512331. The next prime is 100512389. The reversal of 100512342 is 243215001.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17242 + ... + 22322.

It is an arithmetic number, because the mean of its divisors is an integer number (5219214).

Almost surely, 2^100512342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100512342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125261136).

100512342 is an abundant number, since it is smaller than the sum of its proper divisors (150009930).

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

100512342 is a wasteful number, since it uses less digits than its factorization.

100512342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5253 (or 5250 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 100512342 is about 10025.5843719955. The cubic root of 100512342 is about 464.9502270694.

Adding to 100512342 its reverse (243215001), we get a palindrome (343727343).

The spelling of 100512342 in words is "one hundred million, five hundred twelve thousand, three hundred forty-two".