420280535 has 4 divisors (see below), whose sum is σ = 504336648. Its totient is φ = 336224424.

The previous prime is 420280457. The next prime is 420280537. The reversal of 420280535 is 535082024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420280535 - 2¹⁴ = 420264151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420280498 and 420280507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420280537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42028049 + ... + 42028058.

It is an arithmetic number, because the mean of its divisors is an integer number (126084162).

Almost surely, 2^420280535 is an apocalyptic number.

420280535 is a deficient number, since it is larger than the sum of its proper divisors (84056113).

420280535 is an equidigital number, since it uses as much as digits as its factorization.

420280535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84056112.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 420280535 is about 20500.7447425697. The cubic root of 420280535 is about 749.0539389784.

The spelling of 420280535 in words is "four hundred twenty million, two hundred eighty thousand, five hundred thirty-five".