420042343 has 16 divisors (see below), whose sum is σ = 500371456. Its totient is φ = 345021120.

The previous prime is 420042323. The next prime is 420042349. The reversal of 420042343 is 343240024.

It is a cyclic number.

It is not a de Polignac number, because 420042343 - 2¹³ = 420034151 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 (420042349) 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, 12955 + ... + 31747.

It is an arithmetic number, because the mean of its divisors is an integer number (31273216).

Almost surely, 2^420042343 is an apocalyptic number.

420042343 is a deficient number, since it is larger than the sum of its proper divisors (80329113).

420042343 is a wasteful number, since it uses less digits than its factorization.

420042343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18934.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 420042343 is about 20494.9345693027. The cubic root of 420042343 is about 748.9124046479.

Adding to 420042343 its reverse (343240024), we get a palindrome (763282367).

The spelling of 420042343 in words is "four hundred twenty million, forty-two thousand, three hundred forty-three".