109607421 has 16 divisors (see below), whose sum is σ = 182204928. Its totient is φ = 56938800.

The previous prime is 109607419. The next prime is 109607441. The reversal of 109607421 is 124706901.

It is a happy number.

It is not a de Polignac number, because 109607421 - 2¹ = 109607419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109607411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 237015 + ... + 237476.

It is an arithmetic number, because the mean of its divisors is an integer number (11387808).

Almost surely, 2^109607421 is an apocalyptic number.

109607421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

109607421 is a deficient number, since it is larger than the sum of its proper divisors (72597507).

109607421 is a wasteful number, since it uses less digits than its factorization.

109607421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474512.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 109607421 is about 10469.3562839365. The cubic root of 109607421 is about 478.5713029861.

It can be divided in two parts, 10960 and 7421, that added together give a palindrome (18381).

The spelling of 109607421 in words is "one hundred nine million, six hundred seven thousand, four hundred twenty-one".