109652421 has 4 divisors (see below), whose sum is σ = 146203232. Its totient is φ = 73101612.

The previous prime is 109652419. The next prime is 109652429. The reversal of 109652421 is 124256901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124256901 = 3 ⋅41418967.

It is not a de Polignac number, because 109652421 - 2¹ = 109652419 is a prime.

It is a super-2 number, since 2×109652421² = 24047306862322482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109652429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18275401 + ... + 18275406.

It is an arithmetic number, because the mean of its divisors is an integer number (36550808).

Almost surely, 2^109652421 is an apocalyptic number.

It is an amenable number.

109652421 is a deficient number, since it is larger than the sum of its proper divisors (36550811).

109652421 is an equidigital number, since it uses as much as digits as its factorization.

109652421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36550810.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 109652421 is about 10471.5051926645. The cubic root of 109652421 is about 478.6367874880.

The spelling of 109652421 in words is "one hundred nine million, six hundred fifty-two thousand, four hundred twenty-one".