123405701 has 4 divisors (see below), whose sum is σ = 127661100. Its totient is φ = 119150304.

The previous prime is 123405683. The next prime is 123405713. The reversal of 123405701 is 107504321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20484676 + 102921025 = 4526^2 + 10145^2 .

It is a cyclic number.

It is not a de Polignac number, because 123405701 - 2¹⁸ = 123143557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123405721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2127656 + ... + 2127713.

It is an arithmetic number, because the mean of its divisors is an integer number (31915275).

Almost surely, 2^123405701 is an apocalyptic number.

It is an amenable number.

123405701 is a deficient number, since it is larger than the sum of its proper divisors (4255399).

123405701 is an equidigital number, since it uses as much as digits as its factorization.

123405701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4255398.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 123405701 is about 11108.8118626611. The cubic root of 123405701 is about 497.8651659398.

The spelling of 123405701 in words is "one hundred twenty-three million, four hundred five thousand, seven hundred one".