420213441 has 4 divisors (see below), whose sum is σ = 560284592. Its totient is φ = 280142292.

The previous prime is 420213379. The next prime is 420213457. The reversal of 420213441 is 144312024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 420213441 - 2⁶ = 420213377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420213461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70035571 + ... + 70035576.

It is an arithmetic number, because the mean of its divisors is an integer number (140071148).

Almost surely, 2^420213441 is an apocalyptic number.

It is an amenable number.

420213441 is a deficient number, since it is larger than the sum of its proper divisors (140071151).

420213441 is a wasteful number, since it uses less digits than its factorization.

420213441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140071150.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 420213441 is about 20499.1082976797. The cubic root of 420213441 is about 749.0140769534.

Adding to 420213441 its reverse (144312024), we get a palindrome (564525465).

The spelling of 420213441 in words is "four hundred twenty million, two hundred thirteen thousand, four hundred forty-one".