421110155 has 8 divisors (see below), whose sum is σ = 507898512. Its totient is φ = 335177248.

The previous prime is 421110149. The next prime is 421110181. The reversal of 421110155 is 551011124.

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 421110155 - 2¹⁰ = 421109131 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 212777 + ... + 214746.

It is an arithmetic number, because the mean of its divisors is an integer number (63487314).

Almost surely, 2^421110155 is an apocalyptic number.

421110155 is a deficient number, since it is larger than the sum of its proper divisors (86788357).

421110155 is a wasteful number, since it uses less digits than its factorization.

421110155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427725.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 421110155 is about 20520.9686662204. The cubic root of 421110155 is about 749.5464843385.

Adding to 421110155 its reverse (551011124), we get a palindrome (972121279).

The spelling of 421110155 in words is "four hundred twenty-one million, one hundred ten thousand, one hundred fifty-five".