421334045 has 16 divisors (see below), whose sum is σ = 560917440. Its totient is φ = 301228800.

The previous prime is 421334041. The next prime is 421334071. The reversal of 421334045 is 540433124.

It is not a de Polignac number, because 421334045 - 2² = 421334041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421334041) 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 15 ways as a sum of consecutive naturals, for example, 61676 + ... + 68165.

It is an arithmetic number, because the mean of its divisors is an integer number (35057340).

Almost surely, 2^421334045 is an apocalyptic number.

It is an amenable number.

421334045 is a deficient number, since it is larger than the sum of its proper divisors (139583395).

421334045 is a wasteful number, since it uses less digits than its factorization.

421334045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129916.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 421334045 is about 20526.4230931743. The cubic root of 421334045 is about 749.6792969597.

Adding to 421334045 its reverse (540433124), we get a palindrome (961767169).

The spelling of 421334045 in words is "four hundred twenty-one million, three hundred thirty-four thousand, forty-five".