100121140 has 24 divisors (see below), whose sum is σ = 240291072. Its totient is φ = 34327200.

The previous prime is 100121129. The next prime is 100121141. The reversal of 100121140 is 41121001.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 357436 + ... + 357715.

It is an arithmetic number, because the mean of its divisors is an integer number (10012128).

Almost surely, 2^100121140 is an apocalyptic number.

100121140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100121140 is an abundant number, since it is smaller than the sum of its proper divisors (140169932).

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

100121140 is a wasteful number, since it uses less digits than its factorization.

100121140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715167 (or 715165 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 100121140 is about 10006.0551667478. The cubic root of 100121140 is about 464.3462350861.

Adding to 100121140 its reverse (41121001), we get a palindrome (141242141).

The spelling of 100121140 in words is "one hundred million, one hundred twenty-one thousand, one hundred forty".