420663133 has 4 divisors (see below), whose sum is σ = 458905248. Its totient is φ = 382421020.

The previous prime is 420663127. The next prime is 420663193. The reversal of 420663133 is 331366024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420663133 - 2⁹ = 420662621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420663193) 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, 19121041 + ... + 19121062.

It is an arithmetic number, because the mean of its divisors is an integer number (114726312).

Almost surely, 2^420663133 is an apocalyptic number.

It is an amenable number.

420663133 is a deficient number, since it is larger than the sum of its proper divisors (38242115).

420663133 is a wasteful number, since it uses less digits than its factorization.

420663133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38242114.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 420663133 is about 20510.0739394084. The cubic root of 420663133 is about 749.2811678532.

The spelling of 420663133 in words is "four hundred twenty million, six hundred sixty-three thousand, one hundred thirty-three".