420234345 has 32 divisors (see below), whose sum is σ = 767283840. Its totient is φ = 218064960.

The previous prime is 420234337. The next prime is 420234377. The reversal of 420234345 is 543432024.

420234345 is a `hidden beast` number, since 420 + 234 + 3 + 4 + 5 = 666.

It is not a de Polignac number, because 420234345 - 2³ = 420234337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37071 + ... + 47060.

It is an arithmetic number, because the mean of its divisors is an integer number (23977620).

Almost surely, 2^420234345 is an apocalyptic number.

420234345 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

420234345 is a deficient number, since it is larger than the sum of its proper divisors (347049495).

420234345 is a wasteful number, since it uses less digits than its factorization.

420234345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84182 (or 84176 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 420234345 is about 20499.6181671757. The cubic root of 420234345 is about 749.0264969358.

Adding to 420234345 its reverse (543432024), we get a palindrome (963666369).

The spelling of 420234345 in words is "four hundred twenty million, two hundred thirty-four thousand, three hundred forty-five".