420521315 has 8 divisors (see below), whose sum is σ = 522026640. Its totient is φ = 324816352.

The previous prime is 420521273. The next prime is 420521327. The reversal of 420521315 is 513125024.

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 420521315 - 2¹⁸ = 420259171 is a prime.

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, 1449929 + ... + 1450218.

It is an arithmetic number, because the mean of its divisors is an integer number (65253330).

Almost surely, 2^420521315 is an apocalyptic number.

420521315 is a deficient number, since it is larger than the sum of its proper divisors (101505325).

420521315 is a wasteful number, since it uses less digits than its factorization.

420521315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2900181.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 420521315 is about 20506.6163713081. The cubic root of 420521315 is about 749.1969567653.

Adding to 420521315 its reverse (513125024), we get a palindrome (933646339).

The spelling of 420521315 in words is "four hundred twenty million, five hundred twenty-one thousand, three hundred fifteen".