123745073 has 4 divisors (see below), whose sum is σ = 123773940. Its totient is φ = 123716208.

The previous prime is 123745067. The next prime is 123745079. The reversal of 123745073 is 370547321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 370547321 = 2851 ⋅129971.

It is an interprime number because it is at equal distance from previous prime (123745067) and next prime (123745079).

It can be written as a sum of positive squares in 2 ways, for example, as 45387169 + 78357904 = 6737^2 + 8852^2 .

It is a cyclic number.

It is not a de Polignac number, because 123745073 - 2⁶ = 123745009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123745079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6578 + ... + 17051.

It is an arithmetic number, because the mean of its divisors is an integer number (30943485).

Almost surely, 2^123745073 is an apocalyptic number.

It is an amenable number.

123745073 is a deficient number, since it is larger than the sum of its proper divisors (28867).

123745073 is an equidigital number, since it uses as much as digits as its factorization.

123745073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28866.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 123745073 is about 11124.0762762577. The cubic root of 123745073 is about 498.3211331214.

The spelling of 123745073 in words is "one hundred twenty-three million, seven hundred forty-five thousand, seventy-three".