420248715 has 32 divisors (see below), whose sum is σ = 701153280. Its totient is φ = 214671744.

The previous prime is 420248711. The next prime is 420248749. The reversal of 420248715 is 517842024.

It is not a de Polignac number, because 420248715 - 2² = 420248711 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420248711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51442 + ... + 59048.

It is an arithmetic number, because the mean of its divisors is an integer number (21911040).

Almost surely, 2^420248715 is an apocalyptic number.

420248715 is a deficient number, since it is larger than the sum of its proper divisors (280904565).

420248715 is a wasteful number, since it uses less digits than its factorization.

420248715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7771.

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 420248715 is about 20499.9686585126. The cubic root of 420248715 is about 749.0350345436.

The spelling of 420248715 in words is "four hundred twenty million, two hundred forty-eight thousand, seven hundred fifteen".