110420521 has 4 divisors (see below), whose sum is σ = 110507344. Its totient is φ = 110333700.

The previous prime is 110420509. The next prime is 110420579. The reversal of 110420521 is 125024011.

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: 125024011 = 7 ⋅17860573.

It is a cyclic number.

It is not a de Polignac number, because 110420521 - 2²³ = 102031913 is a prime.

It is a super-2 number, since 2×110420521² = 24385382915822882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110420495 and 110420504.

It is not an unprimeable number, because it can be changed into a prime (110420021) 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, 41475 + ... + 44056.

It is an arithmetic number, because the mean of its divisors is an integer number (27626836).

Almost surely, 2^110420521 is an apocalyptic number.

It is an amenable number.

110420521 is a deficient number, since it is larger than the sum of its proper divisors (86823).

110420521 is an equidigital number, since it uses as much as digits as its factorization.

110420521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86822.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 110420521 is about 10508.1169102746. The cubic root of 110420521 is about 479.7517828333.

Adding to 110420521 its reverse (125024011), we get a palindrome (235444532).

The spelling of 110420521 in words is "one hundred ten million, four hundred twenty thousand, five hundred twenty-one".