420515403 has 48 divisors (see below), whose sum is σ = 734561280. Its totient is φ = 211377600.

The previous prime is 420515401. The next prime is 420515411. The reversal of 420515403 is 304515024.

It is not a de Polignac number, because 420515403 - 2¹ = 420515401 is a prime.

It is a super-3 number, since 3×420515403³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (420515401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45933 + ... + 54321.

It is an arithmetic number, because the mean of its divisors is an integer number (15303360).

Almost surely, 2^420515403 is an apocalyptic number.

420515403 is a deficient number, since it is larger than the sum of its proper divisors (314045877).

420515403 is a wasteful number, since it uses less digits than its factorization.

420515403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8448 (or 8441 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 420515403 is about 20506.4722222034. The cubic root of 420515403 is about 749.1934458270.

The spelling of 420515403 in words is "four hundred twenty million, five hundred fifteen thousand, four hundred three".