100118540 has 36 divisors (see below), whose sum is σ = 219810864. Its totient is φ = 38302176.

The previous prime is 100118539. The next prime is 100118621. The reversal of 100118540 is 45811001.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5849 + ... + 15311.

Almost surely, 2^100118540 is an apocalyptic number.

100118540 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 100118540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109905432).

100118540 is an abundant number, since it is smaller than the sum of its proper divisors (119692324).

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

100118540 is a wasteful number, since it uses less digits than its factorization.

100118540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9518 (or 9493 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 100118540 is about 10005.9252445738. The cubic root of 100118540 is about 464.3422155865.

Adding to 100118540 its reverse (45811001), we get a palindrome (145929541).

The spelling of 100118540 in words is "one hundred million, one hundred eighteen thousand, five hundred forty".