420872983 has 2 divisors, whose sum is σ = 420872984. Its totient is φ = 420872982.

The previous prime is 420872953. The next prime is 420872987. The reversal of 420872983 is 389278024.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420872983 - 2⁵ = 420872951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420872987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210436491 + 210436492.

It is an arithmetic number, because the mean of its divisors is an integer number (210436492).

Almost surely, 2^420872983 is an apocalyptic number.

420872983 is a deficient number, since it is larger than the sum of its proper divisors (1).

420872983 is an equidigital number, since it uses as much as digits as its factorization.

420872983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 420872983 is about 20515.1890802888. The cubic root of 420872983 is about 749.4057414148.

It can be divided in two parts, 42087 and 2983, that multiplied together give a palindrome (125545521).

The spelling of 420872983 in words is "four hundred twenty million, eight hundred seventy-two thousand, nine hundred eighty-three".