100021340 has 12 divisors (see below), whose sum is σ = 210044856. Its totient is φ = 40008528.

The previous prime is 100021333. The next prime is 100021351. The reversal of 100021340 is 43120001.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2500514 + ... + 2500553.

It is an arithmetic number, because the mean of its divisors is an integer number (17503738).

Almost surely, 2^100021340 is an apocalyptic number.

100021340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100021340 is an abundant number, since it is smaller than the sum of its proper divisors (110023516).

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

100021340 is a wasteful number, since it uses less digits than its factorization.

100021340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5001076 (or 5001074 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 100021340 is about 10001.0669430816. The cubic root of 100021340 is about 464.1918981815.

Adding to 100021340 its reverse (43120001), we get a palindrome (143141341).

The spelling of 100021340 in words is "one hundred million, twenty-one thousand, three hundred forty".