745115123 has 8 divisors (see below), whose sum is σ = 755110080. Its totient is φ = 735134400.

The previous prime is 745115113. The next prime is 745115131. The reversal of 745115123 is 321511547.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745115123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745115113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139661 + ... + 144897.

It is an arithmetic number, because the mean of its divisors is an integer number (94388760).

Almost surely, 2^745115123 is an apocalyptic number.

745115123 is a deficient number, since it is larger than the sum of its proper divisors (9994957).

745115123 is a wasteful number, since it uses less digits than its factorization.

745115123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7117.

The product of its digits is 4200, while the sum is 29.

The square root of 745115123 is about 27296.7969366371. The cubic root of 745115123 is about 906.5834626796.

The spelling of 745115123 in words is "seven hundred forty-five million, one hundred fifteen thousand, one hundred twenty-three".