100442430 has 80 divisors (see below), whose sum is σ = 294657264. Its totient is φ = 24347520.

The previous prime is 100442413. The next prime is 100442437. The reversal of 100442430 is 34244001.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100442437) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3274 + ... + 14546.

Almost surely, 2^100442430 is an apocalyptic number.

100442430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 100442430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147328632).

100442430 is an abundant number, since it is smaller than the sum of its proper divisors (194214834).

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

100442430 is a wasteful number, since it uses less digits than its factorization.

100442430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11303 (or 11294 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 100442430 is about 10022.0970859396. The cubic root of 100442430 is about 464.8424023683.

Adding to 100442430 its reverse (34244001), we get a palindrome (134686431).

It can be divided in two parts, 1004 and 42430, that added together give a palindrome (43434).

The spelling of 100442430 in words is "one hundred million, four hundred forty-two thousand, four hundred thirty".