420303987 has 6 divisors (see below), whose sum is σ = 607105772. Its totient is φ = 280202652.

The previous prime is 420303967. The next prime is 420304009. The reversal of 420303987 is 789303024.

It is not a de Polignac number, because 420303987 - 2¹¹ = 420301939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420303907) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23350213 + ... + 23350230.

Almost surely, 2^420303987 is an apocalyptic number.

420303987 is a deficient number, since it is larger than the sum of its proper divisors (186801785).

420303987 is a wasteful number, since it uses less digits than its factorization.

420303987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46700449 (or 46700446 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 420303987 is about 20501.3167138113. The cubic root of 420303987 is about 749.0678713281.

The spelling of 420303987 in words is "four hundred twenty million, three hundred three thousand, nine hundred eighty-seven".