123442745 has 8 divisors (see below), whose sum is σ = 148454016. Its totient is φ = 98539056.

The previous prime is 123442721. The next prime is 123442751. The reversal of 123442745 is 547244321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123442745 - 2⁶ = 123442681 is a prime.

It is a super-2 number, since 2×123442745² = 30476222586270050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24347 + ... + 28976.

It is an arithmetic number, because the mean of its divisors is an integer number (18556752).

Almost surely, 2^123442745 is an apocalyptic number.

It is an amenable number.

123442745 is a deficient number, since it is larger than the sum of its proper divisors (25011271).

123442745 is an equidigital number, since it uses as much as digits as its factorization.

123442745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53791.

The product of its digits is 26880, while the sum is 32.

The square root of 123442745 is about 11110.4790625787. The cubic root of 123442745 is about 497.9149774476.

The spelling of 123442745 in words is "one hundred twenty-three million, four hundred forty-two thousand, seven hundred forty-five".