420340244 has 24 divisors (see below), whose sum is σ = 750768480. Its totient is φ = 205848864.

The previous prime is 420340243. The next prime is 420340247. The reversal of 420340244 is 442043024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420340243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155327 + ... + 158009.

It is an arithmetic number, because the mean of its divisors is an integer number (31282020).

Almost surely, 2^420340244 is an apocalyptic number.

It is an amenable number.

420340244 is a deficient number, since it is larger than the sum of its proper divisors (330428236).

420340244 is a wasteful number, since it uses less digits than its factorization.

420340244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3479 (or 3477 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 420340244 is about 20502.2009550194. The cubic root of 420340244 is about 749.0894098445.

Adding to 420340244 its reverse (442043024), we get a palindrome (862383268).

The spelling of 420340244 in words is "four hundred twenty million, three hundred forty thousand, two hundred forty-four".