745126243 has 2 divisors, whose sum is σ = 745126244. Its totient is φ = 745126242.

The previous prime is 745126223. The next prime is 745126253. The reversal of 745126243 is 342621547.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 745126243 - 2¹⁷ = 744995171 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 745126199 and 745126208.

It is not a weakly prime, because it can be changed into another prime (745126223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372563121 + 372563122.

It is an arithmetic number, because the mean of its divisors is an integer number (372563122).

Almost surely, 2^745126243 is an apocalyptic number.

745126243 is a deficient number, since it is larger than the sum of its proper divisors (1).

745126243 is an equidigital number, since it uses as much as digits as its factorization.

745126243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 34.

The square root of 745126243 is about 27297.0006227791. Note that the first 3 decimals coincide. The cubic root of 745126243 is about 906.5879725679.

Subtracting from 745126243 its sum of digits (34), we obtain a square (745126209 = 27297²).

The spelling of 745126243 in words is "seven hundred forty-five million, one hundred twenty-six thousand, two hundred forty-three".