108434721 has 8 divisors (see below), whose sum is σ = 153084384. Its totient is φ = 68037440.

The previous prime is 108434713. The next prime is 108434737. The reversal of 108434721 is 127434801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 108434721 - 2³ = 108434713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (108434701) by changing a digit.

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, 1063035 + ... + 1063136.

It is an arithmetic number, because the mean of its divisors is an integer number (19135548).

Almost surely, 2^108434721 is an apocalyptic number.

It is an amenable number.

108434721 is a deficient number, since it is larger than the sum of its proper divisors (44649663).

108434721 is a wasteful number, since it uses less digits than its factorization.

108434721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126191.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 108434721 is about 10413.1993642684. The cubic root of 108434721 is about 476.8584199796.

The spelling of 108434721 in words is "one hundred eight million, four hundred thirty-four thousand, seven hundred twenty-one".