420140344 has 32 divisors (see below), whose sum is σ = 849204720. Its totient is φ = 193718016.

The previous prime is 420140341. The next prime is 420140351. The reversal of 420140344 is 443041024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420140341) 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 7 ways as a sum of consecutive naturals, for example, 206259 + ... + 208285.

Almost surely, 2^420140344 is an apocalyptic number.

It is an amenable number.

420140344 is an abundant number, since it is smaller than the sum of its proper divisors (429064376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420140344 is a wasteful number, since it uses less digits than its factorization.

420140344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4039 (or 4035 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 420140344 is about 20497.3252889249. The cubic root of 420140344 is about 748.9706435839.

Adding to 420140344 its reverse (443041024), we get a palindrome (863181368).

The spelling of 420140344 in words is "four hundred twenty million, one hundred forty thousand, three hundred forty-four".