72742003 has 2 divisors, whose sum is σ = 72742004. Its totient is φ = 72742002.

The previous prime is 72742001. The next prime is 72742057. The reversal of 72742003 is 30024727.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72742003 - 2¹ = 72742001 is a prime.

Together with 72742001, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (72742001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36371001 + 36371002.

It is an arithmetic number, because the mean of its divisors is an integer number (36371002).

Almost surely, 2^72742003 is an apocalyptic number.

72742003 is a deficient number, since it is larger than the sum of its proper divisors (1).

72742003 is an equidigital number, since it uses as much as digits as its factorization.

72742003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 72742003 is about 8528.8922492901. The cubic root of 72742003 is about 417.4409836860.

The spelling of 72742003 in words is "seventy-two million, seven hundred forty-two thousand, three".