420803087 has 2 divisors, whose sum is σ = 420803088. Its totient is φ = 420803086.

The previous prime is 420803077. The next prime is 420803143. The reversal of 420803087 is 780308024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420803087 - 2⁸ = 420802831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420803077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210401543 + 210401544.

It is an arithmetic number, because the mean of its divisors is an integer number (210401544).

Almost surely, 2^420803087 is an apocalyptic number.

420803087 is a deficient number, since it is larger than the sum of its proper divisors (1).

420803087 is an equidigital number, since it uses as much as digits as its factorization.

420803087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 420803087 is about 20513.4854912567. The cubic root of 420803087 is about 749.3642535505.

The spelling of 420803087 in words is "four hundred twenty million, eight hundred three thousand, eighty-seven".