420846245 has 4 divisors (see below), whose sum is σ = 505015500. Its totient is φ = 336676992.

The previous prime is 420846227. The next prime is 420846287. The reversal of 420846245 is 542648024.

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

It can be written as a sum of positive squares in 2 ways, for example, as 256032001 + 164814244 = 16001^2 + 12838^2 .

It is a cyclic number.

It is not a de Polignac number, because 420846245 - 2⁸ = 420845989 is a prime.

It is a super-2 number, since 2×420846245² = 354223123861200050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42084620 + ... + 42084629.

It is an arithmetic number, because the mean of its divisors is an integer number (126253875).

Almost surely, 2^420846245 is an apocalyptic number.

It is an amenable number.

420846245 is a deficient number, since it is larger than the sum of its proper divisors (84169255).

420846245 is an equidigital number, since it uses as much as digits as its factorization.

420846245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84169254.

The product of its (nonzero) digits is 61440, while the sum is 35.

The square root of 420846245 is about 20514.5374064345. The cubic root of 420846245 is about 749.3898711991.

The spelling of 420846245 in words is "four hundred twenty million, eight hundred forty-six thousand, two hundred forty-five".