109421140 has 24 divisors (see below), whose sum is σ = 230379912. Its totient is φ = 43655040.

The previous prime is 109421107. The next prime is 109421149. The reversal of 109421140 is 41124901.

It can be written as a sum of positive squares in 4 ways, for example, as 20232004 + 89189136 = 4498^2 + 9444^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109421149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1050 + ... + 14830.

It is an arithmetic number, because the mean of its divisors is an integer number (9599163).

Almost surely, 2^109421140 is an apocalyptic number.

109421140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109421140 is an abundant number, since it is smaller than the sum of its proper divisors (120958772).

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

109421140 is a wasteful number, since it uses less digits than its factorization.

109421140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14187 (or 14185 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 109421140 is about 10460.4560130044. The cubic root of 109421140 is about 478.3000339685.

It can be divided in two parts, 109421 and 140, that added together give a square (109561 = 331²).

The spelling of 109421140 in words is "one hundred nine million, four hundred twenty-one thousand, one hundred forty".