745125243 has 4 divisors (see below), whose sum is σ = 993500328. Its totient is φ = 496750160.

The previous prime is 745125239. The next prime is 745125253. The reversal of 745125243 is 342521547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342521547 = 3 ⋅114173849.

It is a cyclic number.

It is not a de Polignac number, because 745125243 - 2² = 745125239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (745125233) 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, 124187538 + ... + 124187543.

It is an arithmetic number, because the mean of its divisors is an integer number (248375082).

Almost surely, 2^745125243 is an apocalyptic number.

745125243 is a deficient number, since it is larger than the sum of its proper divisors (248375085).

745125243 is a wasteful number, since it uses less digits than its factorization.

745125243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248375084.

The product of its digits is 33600, while the sum is 33.

The square root of 745125243 is about 27296.9823057421. The cubic root of 745125243 is about 906.5875670042.

The spelling of 745125243 in words is "seven hundred forty-five million, one hundred twenty-five thousand, two hundred forty-three".