123261938 has 4 divisors (see below), whose sum is σ = 184892910. Its totient is φ = 61630968.

The previous prime is 123261937. The next prime is 123261947. The reversal of 123261938 is 839162321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 103164649 + 20097289 = 10157^2 + 4483^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123261898 and 123261907.

It is not an unprimeable number, because it can be changed into a prime (123261937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30815483 + ... + 30815486.

Almost surely, 2^123261938 is an apocalyptic number.

123261938 is a deficient number, since it is larger than the sum of its proper divisors (61630972).

123261938 is an equidigital number, since it uses as much as digits as its factorization.

123261938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61630971.

The product of its digits is 15552, while the sum is 35.

The square root of 123261938 is about 11102.3393030478. The cubic root of 123261938 is about 497.6717594192.

The spelling of 123261938 in words is "one hundred twenty-three million, two hundred sixty-one thousand, nine hundred thirty-eight".