110400421 has 8 divisors (see below), whose sum is σ = 111129624. Its totient is φ = 109674240.

The previous prime is 110400403. The next prime is 110400449. The reversal of 110400421 is 124004011.

It can be written as a sum of positive squares in 4 ways, for example, as 8673025 + 101727396 = 2945^2 + 10086^2 .

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

It is a 4-Lehmer number, since φ(110400421) divides (110400421-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 110400421 - 2⁹ = 110399909 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 (110400401) 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, 162735 + ... + 163411.

It is an arithmetic number, because the mean of its divisors is an integer number (13891203).

Almost surely, 2^110400421 is an apocalyptic number.

It is an amenable number.

110400421 is a deficient number, since it is larger than the sum of its proper divisors (729203).

110400421 is an equidigital number, since it uses as much as digits as its factorization.

110400421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 110400421 is about 10507.1604632270. The cubic root of 110400421 is about 479.7226711068.

Adding to 110400421 its reverse (124004011), we get a palindrome (234404432).

The spelling of 110400421 in words is "one hundred ten million, four hundred thousand, four hundred twenty-one".