421263239 has 8 divisors (see below), whose sum is σ = 447874272. Its totient is φ = 395343520.

The previous prime is 421263229. The next prime is 421263287. The reversal of 421263239 is 932362124.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421263239 is a prime.

It is a super-2 number, since 2×421263239² = 354925433065542242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421263229) 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, 171572 + ... + 174009.

It is an arithmetic number, because the mean of its divisors is an integer number (55984284).

Almost surely, 2^421263239 is an apocalyptic number.

421263239 is a deficient number, since it is larger than the sum of its proper divisors (26611033).

421263239 is a wasteful number, since it uses less digits than its factorization.

421263239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345657.

The product of its digits is 15552, while the sum is 32.

The square root of 421263239 is about 20524.6982681841. The cubic root of 421263239 is about 749.6372995891.

The spelling of 421263239 in words is "four hundred twenty-one million, two hundred sixty-three thousand, two hundred thirty-nine".