421400133 has 48 divisors (see below), whose sum is σ = 766112256. Its totient is φ = 216825120.

The previous prime is 421400113. The next prime is 421400149. The reversal of 421400133 is 331004124.

It is not a de Polignac number, because 421400133 - 2⁵ = 421400101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421400113) 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 47 ways as a sum of consecutive naturals, for example, 71310 + ... + 76992.

It is an arithmetic number, because the mean of its divisors is an integer number (15960672).

Almost surely, 2^421400133 is an apocalyptic number.

It is an amenable number.

421400133 is a deficient number, since it is larger than the sum of its proper divisors (344712123).

421400133 is a wasteful number, since it uses less digits than its factorization.

421400133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5814 (or 5811 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 421400133 is about 20528.0328575341. The cubic root of 421400133 is about 749.7184916840.

Adding to 421400133 its reverse (331004124), we get a palindrome (752404257).

The spelling of 421400133 in words is "four hundred twenty-one million, four hundred thousand, one hundred thirty-three".