123738342 has 64 divisors (see below), whose sum is σ = 322527744. Its totient is φ = 30712320.

The previous prime is 123738337. The next prime is 123738343. The reversal of 123738342 is 243837321.

It is a super-2 number, since 2×123738342² = 30622354561817928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123738343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2617 + ... + 15947.

It is an arithmetic number, because the mean of its divisors is an integer number (5039496).

Almost surely, 2^123738342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123738342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161263872).

123738342 is an abundant number, since it is smaller than the sum of its proper divisors (198789402).

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

123738342 is a wasteful number, since it uses less digits than its factorization.

123738342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13373.

The product of its digits is 24192, while the sum is 33.

The square root of 123738342 is about 11123.7737301691. The cubic root of 123738342 is about 498.3120977169.

The spelling of 123738342 in words is "one hundred twenty-three million, seven hundred thirty-eight thousand, three hundred forty-two".