420765515 has 8 divisors (see below), whose sum is σ = 507015168. Its totient is φ = 335214720.

The previous prime is 420765491. The next prime is 420765539. The reversal of 420765515 is 515567024.

It is an interprime number because it is at equal distance from previous prime (420765491) and next prime (420765539).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-420765515 is a prime.

It is a super-2 number, since 2×420765515² = 354087237226430450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173387 + ... + 175796.

It is an arithmetic number, because the mean of its divisors is an integer number (63376896).

Almost surely, 2^420765515 is an apocalyptic number.

420765515 is a deficient number, since it is larger than the sum of its proper divisors (86249653).

420765515 is a wasteful number, since it uses less digits than its factorization.

420765515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349429.

The product of its (nonzero) digits is 42000, while the sum is 35.

The square root of 420765515 is about 20512.5696830017. The cubic root of 420765515 is about 749.3419502036.

The spelling of 420765515 in words is "four hundred twenty million, seven hundred sixty-five thousand, five hundred fifteen".