426207239 has 2 divisors, whose sum is σ = 426207240. Its totient is φ = 426207238.

The previous prime is 426207217. The next prime is 426207247. The reversal of 426207239 is 932702624.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426207239 is a prime.

It is a super-2 number, since 2×426207239² = 363305221152006242, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 426207199 and 426207208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426207269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213103619 + 213103620.

It is an arithmetic number, because the mean of its divisors is an integer number (213103620).

Almost surely, 2^426207239 is an apocalyptic number.

426207239 is a deficient number, since it is larger than the sum of its proper divisors (1).

426207239 is an equidigital number, since it uses as much as digits as its factorization.

426207239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 426207239 is about 20644.7872113035. The cubic root of 426207239 is about 752.5585148185.

The spelling of 426207239 in words is "four hundred twenty-six million, two hundred seven thousand, two hundred thirty-nine".