742855903 has 2 divisors, whose sum is σ = 742855904. Its totient is φ = 742855902.

The previous prime is 742855877. The next prime is 742855921. The reversal of 742855903 is 309558247.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 742855903 - 2⁵ = 742855871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 742855903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (742855933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371427951 + 371427952.

It is an arithmetic number, because the mean of its divisors is an integer number (371427952).

Almost surely, 2^742855903 is an apocalyptic number.

742855903 is a deficient number, since it is larger than the sum of its proper divisors (1).

742855903 is an equidigital number, since it uses as much as digits as its factorization.

742855903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 43.

The square root of 742855903 is about 27255.3830096001. The cubic root of 742855903 is about 905.6662688267. Note that the first 3 decimals are identical.

The spelling of 742855903 in words is "seven hundred forty-two million, eight hundred fifty-five thousand, nine hundred three".