420000245 has 24 divisors (see below), whose sum is σ = 595228032. Its totient is φ = 278687520.

The previous prime is 420000233. The next prime is 420000271. The reversal of 420000245 is 542000024.

It is not a de Polignac number, because 420000245 - 2¹⁰ = 419999221 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27392 + ... + 39878.

It is an arithmetic number, because the mean of its divisors is an integer number (24801168).

Almost surely, 2^420000245 is an apocalyptic number.

It is an amenable number.

420000245 is a deficient number, since it is larger than the sum of its proper divisors (175227787).

420000245 is a wasteful number, since it uses less digits than its factorization.

420000245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12561 (or 12530 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 420000245 is about 20493.9075093063. The cubic root of 420000245 is about 748.8873843388.

Adding to 420000245 its reverse (542000024), we get a palindrome (962000269).

The spelling of 420000245 in words is "four hundred twenty million, two hundred forty-five", and thus it is an aban number.