420343455 has 16 divisors (see below), whose sum is σ = 768628224. Its totient is φ = 192156960.

The previous prime is 420343409. The next prime is 420343459. The reversal of 420343455 is 554343024.

It is not a de Polignac number, because 420343455 - 2¹⁰ = 420342431 is a prime.

It is a super-2 number, since 2×420343455² = 353377240322674050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420343459) 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, 2001531 + ... + 2001740.

It is an arithmetic number, because the mean of its divisors is an integer number (48039264).

Almost surely, 2^420343455 is an apocalyptic number.

420343455 is a deficient number, since it is larger than the sum of its proper divisors (348284769).

420343455 is a wasteful number, since it uses less digits than its factorization.

420343455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003286.

The product of its (nonzero) digits is 28800, while the sum is 30.

The square root of 420343455 is about 20502.2792635356. The cubic root of 420343455 is about 749.0913172834.

Adding to 420343455 its reverse (554343024), we get a palindrome (974686479).

The spelling of 420343455 in words is "four hundred twenty million, three hundred forty-three thousand, four hundred fifty-five".