420243141 has 4 divisors (see below), whose sum is σ = 560324192. Its totient is φ = 280162092.

The previous prime is 420243139. The next prime is 420243149. The reversal of 420243141 is 141342024.

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 420243141 - 2¹ = 420243139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420243149) 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 3 ways as a sum of consecutive naturals, for example, 70040521 + ... + 70040526.

It is an arithmetic number, because the mean of its divisors is an integer number (140081048).

Almost surely, 2^420243141 is an apocalyptic number.

It is an amenable number.

420243141 is a deficient number, since it is larger than the sum of its proper divisors (140081051).

420243141 is a wasteful number, since it uses less digits than its factorization.

420243141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140081050.

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

The square root of 420243141 is about 20499.8327066345. The cubic root of 420243141 is about 749.0317229017.

Adding to 420243141 its reverse (141342024), we get a palindrome (561585165).

The spelling of 420243141 in words is "four hundred twenty million, two hundred forty-three thousand, one hundred forty-one".