420402621215 has 16 divisors (see below), whose sum is σ = 507470894208. Its totient is φ = 334330814976.

The previous prime is 420402621211. The next prime is 420402621217. The reversal of 420402621215 is 512126204024.

It is a cyclic number.

It is not a de Polignac number, because 420402621215 - 2² = 420402621211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420402621211) by changing a digit.

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, 6904394 + ... + 6965016.

It is an arithmetic number, because the mean of its divisors is an integer number (31716930888).

Almost surely, 2^420402621215 is an apocalyptic number.

420402621215 is a deficient number, since it is larger than the sum of its proper divisors (87068272993).

420402621215 is a wasteful number, since it uses less digits than its factorization.

420402621215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68818.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 420402621215 its reverse (512126204024), we get a palindrome (932528825239).

The spelling of 420402621215 in words is "four hundred twenty billion, four hundred two million, six hundred twenty-one thousand, two hundred fifteen".