420402252415 has 16 divisors (see below), whose sum is σ = 505574467200. Its totient is φ = 335594623392.

The previous prime is 420402252373. The next prime is 420402252493. The reversal of 420402252415 is 514252204024.

It is a cyclic number.

It is not a de Polignac number, because 420402252415 - 2²³ = 420393863807 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5162404 + ... + 5243206.

It is an arithmetic number, because the mean of its divisors is an integer number (31598404200).

Almost surely, 2^420402252415 is an apocalyptic number.

420402252415 is a deficient number, since it is larger than the sum of its proper divisors (85172214785).

420402252415 is a wasteful number, since it uses less digits than its factorization.

420402252415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83046.

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 420402252415 its reverse (514252204024), we get a palindrome (934654456439).

The spelling of 420402252415 in words is "four hundred twenty billion, four hundred two million, two hundred fifty-two thousand, four hundred fifteen".