100213540 has 24 divisors (see below), whose sum is σ = 240512832. Its totient is φ = 34358880.

The previous prime is 100213511. The next prime is 100213583. The reversal of 100213540 is 45312001.

It is an unprimeable number.

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, 357766 + ... + 358045.

It is an arithmetic number, because the mean of its divisors is an integer number (10021368).

Almost surely, 2^100213540 is an apocalyptic number.

100213540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100213540 is an abundant number, since it is smaller than the sum of its proper divisors (140299292).

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

100213540 is a wasteful number, since it uses less digits than its factorization.

100213540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715827 (or 715825 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 100213540 is about 10010.6713061612. The cubic root of 100213540 is about 464.4890367627.

Adding to 100213540 its reverse (45312001), we get a palindrome (145525541).

The spelling of 100213540 in words is "one hundred million, two hundred thirteen thousand, five hundred forty".