1423217020239 has 18 divisors (see below), whose sum is σ = 2391391864680. Its totient is φ = 813266868456.

The previous prime is 1423217020237. The next prime is 1423217020271. The reversal of 1423217020239 is 9320207123241.

1423217020239 is a `hidden beast` number, since 1 + 4 + 232 + 170 + 20 + 239 = 666.

It is not a de Polignac number, because 1423217020239 - 2¹ = 1423217020237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423217020237) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1613624299 + ... + 1613625180.

Almost surely, 2^{1423217020239} is an apocalyptic number.

1423217020239 is a deficient number, since it is larger than the sum of its proper divisors (968174844441).

1423217020239 is a wasteful number, since it uses less digits than its factorization.

1423217020239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3227249499 (or 3227249489 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 1423217020239 in words is "one trillion, four hundred twenty-three billion, two hundred seventeen million, twenty thousand, two hundred thirty-nine".