123467890257 has 12 divisors (see below), whose sum is σ = 178549173504. Its totient is φ = 82216542840.

The previous prime is 123467890229. The next prime is 123467890327. The reversal of 123467890257 is 752098764321.

It is a happy number.

123467890257 is a `hidden beast` number, since 1 + 234 + 6 + 78 + 90 + 257 = 666.

It is not a de Polignac number, because 123467890257 - 2¹¹ = 123467888209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123467894257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7940469 + ... + 7956002.

It is an arithmetic number, because the mean of its divisors is an integer number (14879097792).

It is a 2-persistent number, because it is pandigital, and so is 2⋅123467890257 = 246935780514, but 3⋅123467890257 = 370403670771 is not.

Almost surely, 2^123467890257 is an apocalyptic number.

It is an amenable number.

123467890257 is a deficient number, since it is larger than the sum of its proper divisors (55081283247).

123467890257 is a wasteful number, since it uses less digits than its factorization.

123467890257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15897340 (or 15897337 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 123467890257 in words is "one hundred twenty-three billion, four hundred sixty-seven million, eight hundred ninety thousand, two hundred fifty-seven".