420332043 has 4 divisors (see below), whose sum is σ = 560442728. Its totient is φ = 280221360.

The previous prime is 420332023. The next prime is 420332053. The reversal of 420332043 is 340233024.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 420332043 - 2⁸ = 420331787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420332023) 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, 70055338 + ... + 70055343.

It is an arithmetic number, because the mean of its divisors is an integer number (140110682).

Almost surely, 2^420332043 is an apocalyptic number.

420332043 is a deficient number, since it is larger than the sum of its proper divisors (140110685).

420332043 is a wasteful number, since it uses less digits than its factorization.

420332043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140110684.

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 420332043 is about 20502.0009511267. Note that the first 3 decimals coincide. The cubic root of 420332043 is about 749.0845381385.

Adding to 420332043 its reverse (340233024), we get a palindrome (760565067).

The spelling of 420332043 in words is "four hundred twenty million, three hundred thirty-two thousand, forty-three".