123439371 has 16 divisors (see below), whose sum is σ = 188999040. Its totient is φ = 70873920.

The previous prime is 123439357. The next prime is 123439391. The reversal of 123439371 is 173934321.

It is not a de Polignac number, because 123439371 - 2⁶ = 123439307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (123439331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97810 + ... + 99063.

It is an arithmetic number, because the mean of its divisors is an integer number (11812440).

Almost surely, 2^123439371 is an apocalyptic number.

123439371 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123439371 is a deficient number, since it is larger than the sum of its proper divisors (65559669).

123439371 is a wasteful number, since it uses less digits than its factorization.

123439371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196906.

The product of its digits is 13608, while the sum is 33.

The square root of 123439371 is about 11110.3272229039. The cubic root of 123439371 is about 497.9104409843.

The spelling of 123439371 in words is "one hundred twenty-three million, four hundred thirty-nine thousand, three hundred seventy-one".