420303515 has 16 divisors (see below), whose sum is σ = 514740096. Its totient is φ = 329347200.

The previous prime is 420303497. The next prime is 420303547. The reversal of 420303515 is 515303024.

It is not a de Polignac number, because 420303515 - 2¹² = 420299419 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240545 + ... + 242285.

It is an arithmetic number, because the mean of its divisors is an integer number (32171256).

Almost surely, 2^420303515 is an apocalyptic number.

420303515 is a deficient number, since it is larger than the sum of its proper divisors (94436581).

420303515 is a wasteful number, since it uses less digits than its factorization.

420303515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2710.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 420303515 is about 20501.3052023524. The cubic root of 420303515 is about 749.0675909278.

Adding to 420303515 its reverse (515303024), we get a palindrome (935606539).

The spelling of 420303515 in words is "four hundred twenty million, three hundred three thousand, five hundred fifteen".