421211045 has 16 divisors (see below), whose sum is σ = 508930560. Its totient is φ = 334661184.

The previous prime is 421211041. The next prime is 421211047. The reversal of 421211045 is 540112124.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 421211045 - 2² = 421211041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421211041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 879116 + ... + 879594.

It is an arithmetic number, because the mean of its divisors is an integer number (31808160).

Almost surely, 2^421211045 is an apocalyptic number.

It is an amenable number.

421211045 is a deficient number, since it is larger than the sum of its proper divisors (87719515).

421211045 is a wasteful number, since it uses less digits than its factorization.

421211045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 421211045 is about 20523.4267362933. The cubic root of 421211045 is about 749.6063385956.

Adding to 421211045 its reverse (540112124), we get a palindrome (961323169).

The spelling of 421211045 in words is "four hundred twenty-one million, two hundred eleven thousand, forty-five".