421300155 has 32 divisors (see below), whose sum is σ = 693066240. Its totient is φ = 218453760.

The previous prime is 421300147. The next prime is 421300157. The reversal of 421300155 is 551003124.

It is not a de Polignac number, because 421300155 - 2³ = 421300147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421300157) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75036 + ... + 80454.

It is an arithmetic number, because the mean of its divisors is an integer number (21658320).

Almost surely, 2^421300155 is an apocalyptic number.

421300155 is a deficient number, since it is larger than the sum of its proper divisors (271766085).

421300155 is a wasteful number, since it uses less digits than its factorization.

421300155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5571.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 421300155 is about 20525.5975552479. The cubic root of 421300155 is about 749.6591962717.

Adding to 421300155 its reverse (551003124), we get a palindrome (972303279).

The spelling of 421300155 in words is "four hundred twenty-one million, three hundred thousand, one hundred fifty-five".