420344435 has 16 divisors (see below), whose sum is σ = 601537536. Its totient is φ = 275703648.

The previous prime is 420344417. The next prime is 420344437. The reversal of 420344435 is 534443024.

It is a cyclic number.

It is not a de Polignac number, because 420344435 - 2²⁸ = 151908979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420344398 and 420344407.

It is not an unprimeable number, because it can be changed into a prime (420344437) 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, 260279 + ... + 261888.

It is an arithmetic number, because the mean of its divisors is an integer number (37596096).

Almost surely, 2^420344435 is an apocalyptic number.

420344435 is a deficient number, since it is larger than the sum of its proper divisors (181193101).

420344435 is a wasteful number, since it uses less digits than its factorization.

420344435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522202.

The product of its (nonzero) digits is 23040, while the sum is 29.

The square root of 420344435 is about 20502.3031633034. The cubic root of 420344435 is about 749.0918994334.

Adding to 420344435 its reverse (534443024), we get a palindrome (954787459).

The spelling of 420344435 in words is "four hundred twenty million, three hundred forty-four thousand, four hundred thirty-five".