123342605 has 8 divisors (see below), whose sum is σ = 148104600. Its totient is φ = 98611776.

The previous prime is 123342587. The next prime is 123342649. The reversal of 123342605 is 506243321.

It can be written as a sum of positive squares in 4 ways, for example, as 76090729 + 47251876 = 8723^2 + 6874^2 .

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 123342605 - 2¹⁶ = 123277069 is a prime.

It is a Curzon number.

It is a congruent 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, 2051 + ... + 15839.

It is an arithmetic number, because the mean of its divisors is an integer number (18513075).

Almost surely, 2^123342605 is an apocalyptic number.

It is an amenable number.

123342605 is a deficient number, since it is larger than the sum of its proper divisors (24761995).

123342605 is a wasteful number, since it uses less digits than its factorization.

123342605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15583.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 123342605 is about 11105.9715918960. The cubic root of 123342605 is about 497.7803004500.

Adding to 123342605 its reverse (506243321), we get a palindrome (629585926).

The spelling of 123342605 in words is "one hundred twenty-three million, three hundred forty-two thousand, six hundred five".