110145421 has 4 divisors (see below), whose sum is σ = 111383100. Its totient is φ = 108907744.

The previous prime is 110145383. The next prime is 110145437. The reversal of 110145421 is 124541011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124541011 = 7 ⋅17791573.

It can be written as a sum of positive squares in 2 ways, for example, as 24860196 + 85285225 = 4986^2 + 9235^2 .

It is a cyclic number.

It is not a de Polignac number, because 110145421 - 2¹⁹ = 109621133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110145491) 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, 618706 + ... + 618883.

It is an arithmetic number, because the mean of its divisors is an integer number (27845775).

Almost surely, 2^110145421 is an apocalyptic number.

It is an amenable number.

110145421 is a deficient number, since it is larger than the sum of its proper divisors (1237679).

110145421 is an equidigital number, since it uses as much as digits as its factorization.

110145421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237678.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 110145421 is about 10495.0188661098. The cubic root of 110145421 is about 479.3530360837.

Adding to 110145421 its reverse (124541011), we get a palindrome (234686432).

The spelling of 110145421 in words is "one hundred ten million, one hundred forty-five thousand, four hundred twenty-one".