420791239 has 8 divisors (see below), whose sum is σ = 459233280. Its totient is φ = 382380600.

The previous prime is 420791219. The next prime is 420791291. The reversal of 420791239 is 932197024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420791239 - 2⁵ = 420791207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420791198 and 420791207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420791219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26874 + ... + 39544.

It is an arithmetic number, because the mean of its divisors is an integer number (57404160).

Almost surely, 2^420791239 is an apocalyptic number.

420791239 is a deficient number, since it is larger than the sum of its proper divisors (38442041).

420791239 is a wasteful number, since it uses less digits than its factorization.

420791239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15701.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 420791239 is about 20513.1967035857. The cubic root of 420791239 is about 749.3572205294.

The spelling of 420791239 in words is "four hundred twenty million, seven hundred ninety-one thousand, two hundred thirty-nine".