100123023240 has 128 divisors (see below), whose sum is σ = 334295424000. Its totient is φ = 26655312384.

The previous prime is 100123023211. The next prime is 100123023263. The reversal of 100123023240 is 42320321001.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 579196 + ... + 731924.

It is an arithmetic number, because the mean of its divisors is an integer number (2611683000).

Almost surely, 2^100123023240 is an apocalyptic number.

100123023240 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 100123023240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167147712000).

100123023240 is an abundant number, since it is smaller than the sum of its proper divisors (234172400760).

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

100123023240 is a wasteful number, since it uses less digits than its factorization.

100123023240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153356 (or 153346 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 100123023240 its reverse (42320321001), we get a palindrome (142443344241).

The spelling of 100123023240 in words is "one hundred billion, one hundred twenty-three million, twenty-three thousand, two hundred forty".