420345763 has 4 divisors (see below), whose sum is σ = 420544600. Its totient is φ = 420146928.

The previous prime is 420345713. The next prime is 420345767. The reversal of 420345763 is 367543024.

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

It is a cyclic number.

It is not a de Polignac number, because 420345763 - 2²⁵ = 386791331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420345767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96213 + ... + 100486.

It is an arithmetic number, because the mean of its divisors is an integer number (105136150).

Almost surely, 2^420345763 is an apocalyptic number.

420345763 is a deficient number, since it is larger than the sum of its proper divisors (198837).

420345763 is a wasteful number, since it uses less digits than its factorization.

420345763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198836.

The product of its (nonzero) digits is 60480, while the sum is 34.

The square root of 420345763 is about 20502.3355498831. The cubic root of 420345763 is about 749.0926883047.

Adding to 420345763 its reverse (367543024), we get a palindrome (787888787).

The spelling of 420345763 in words is "four hundred twenty million, three hundred forty-five thousand, seven hundred sixty-three".