420340615 has 8 divisors (see below), whose sum is σ = 513926208. Its totient is φ = 329927520.

The previous prime is 420340601. The next prime is 420340637. The reversal of 420340615 is 516043024.

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-420340615 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420340615.

It is a congruent 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, 792831 + ... + 793360.

It is an arithmetic number, because the mean of its divisors is an integer number (64240776).

Almost surely, 2^420340615 is an apocalyptic number.

420340615 is a deficient number, since it is larger than the sum of its proper divisors (93585593).

420340615 is a wasteful number, since it uses less digits than its factorization.

420340615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586249.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 420340615 is about 20502.2100028265. The cubic root of 420340615 is about 749.0896302311.

Adding to 420340615 its reverse (516043024), we get a palindrome (936383639).

The spelling of 420340615 in words is "four hundred twenty million, three hundred forty thousand, six hundred fifteen".