420087515 has 8 divisors (see below), whose sum is σ = 505187280. Its totient is φ = 335348512.

The previous prime is 420087509. The next prime is 420087539. The reversal of 420087515 is 515780024.

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

It is a cyclic number.

It is not a de Polignac number, because 420087515 - 2¹⁴ = 420071131 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87620 + ... + 92289.

It is an arithmetic number, because the mean of its divisors is an integer number (63148410).

Almost surely, 2^420087515 is an apocalyptic number.

420087515 is a deficient number, since it is larger than the sum of its proper divisors (85099765).

420087515 is a wasteful number, since it uses less digits than its factorization.

420087515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180381.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 420087515 is about 20496.0365680782. The cubic root of 420087515 is about 748.9392500831.

The spelling of 420087515 in words is "four hundred twenty million, eighty-seven thousand, five hundred fifteen".