123271434 has 96 divisors (see below), whose sum is σ = 318112704. Its totient is φ = 34007040.

The previous prime is 123271433. The next prime is 123271439. The reversal of 123271434 is 434172321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 123271398 and 123271407.

It is not an unprimeable number, because it can be changed into a prime (123271433) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 213354 + ... + 213930.

It is an arithmetic number, because the mean of its divisors is an integer number (3313674).

Almost surely, 2^123271434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123271434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159056352).

123271434 is an abundant number, since it is smaller than the sum of its proper divisors (194841270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123271434 is a wasteful number, since it uses less digits than its factorization.

123271434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692 (or 689 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 123271434 is about 11102.7669524313. The cubic root of 123271434 is about 497.6845391676.

The spelling of 123271434 in words is "one hundred twenty-three million, two hundred seventy-one thousand, four hundred thirty-four".