420423141 has 16 divisors (see below), whose sum is σ = 619346304. Its totient is φ = 252324864.

The previous prime is 420423139. The next prime is 420423149. The reversal of 420423141 is 141324024.

It is not a de Polignac number, because 420423141 - 2¹ = 420423139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420423149) 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, 178036 + ... + 180381.

It is an arithmetic number, because the mean of its divisors is an integer number (38709144).

Almost surely, 2^420423141 is an apocalyptic number.

It is an amenable number.

420423141 is a deficient number, since it is larger than the sum of its proper divisors (198923163).

420423141 is a wasteful number, since it uses less digits than its factorization.

420423141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358460.

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

The square root of 420423141 is about 20504.2225163501. Note that the first 3 decimals coincide. The cubic root of 420423141 is about 749.1386502586.

Adding to 420423141 its reverse (141324024), we get a palindrome (561747165).

The spelling of 420423141 in words is "four hundred twenty million, four hundred twenty-three thousand, one hundred forty-one".