420244345 has 8 divisors (see below), whose sum is σ = 504441864. Its totient is φ = 336096384.

The previous prime is 420244313. The next prime is 420244381. The reversal of 420244345 is 543442024.

It can be written as a sum of positive squares in 4 ways, for example, as 35344 + 420209001 = 188^2 + 20499^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420244345 - 2⁵ = 420244313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9927 + ... + 30643.

It is an arithmetic number, because the mean of its divisors is an integer number (63055233).

Almost surely, 2^420244345 is an apocalyptic number.

It is an amenable number.

420244345 is a deficient number, since it is larger than the sum of its proper divisors (84197519).

420244345 is a wasteful number, since it uses less digits than its factorization.

420244345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24779.

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 420244345 is about 20499.8620727067. The cubic root of 420244345 is about 749.0324382283.

Adding to 420244345 its reverse (543442024), we get a palindrome (963686369).

The spelling of 420244345 in words is "four hundred twenty million, two hundred forty-four thousand, three hundred forty-five".