123442746 has 64 divisors (see below), whose sum is σ = 302496768. Its totient is φ = 32779008.

The previous prime is 123442721. The next prime is 123442751. The reversal of 123442746 is 647244321.

It is a super-2 number, since 2×123442746² = 30476223080041032, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58221 + ... + 60303.

It is an arithmetic number, because the mean of its divisors is an integer number (4726512).

Almost surely, 2^123442746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123442746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151248384).

123442746 is an abundant number, since it is smaller than the sum of its proper divisors (179054022).

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

123442746 is a wasteful number, since it uses less digits than its factorization.

123442746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2195.

The product of its digits is 32256, while the sum is 33.

The square root of 123442746 is about 11110.4791075813. The cubic root of 123442746 is about 497.9149787921.

The spelling of 123442746 in words is "one hundred twenty-three million, four hundred forty-two thousand, seven hundred forty-six".