742228457 has 2 divisors, whose sum is σ = 742228458. Its totient is φ = 742228456.

The previous prime is 742228433. The next prime is 742228471. The reversal of 742228457 is 754822247.

742228457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 407192041 + 335036416 = 20179^2 + 18304^2 .

It is an emirp because it is prime and its reverse (754822247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 742228457 - 2¹⁴ = 742212073 is a prime.

It is not a weakly prime, because it can be changed into another prime (742228757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371114228 + 371114229.

It is an arithmetic number, because the mean of its divisors is an integer number (371114229).

Almost surely, 2^742228457 is an apocalyptic number.

It is an amenable number.

742228457 is a deficient number, since it is larger than the sum of its proper divisors (1).

742228457 is an equidigital number, since it uses as much as digits as its factorization.

742228457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 250880, while the sum is 41.

The square root of 742228457 is about 27243.8700811761. The cubic root of 742228457 is about 905.4112096058.

The spelling of 742228457 in words is "seven hundred forty-two million, two hundred twenty-eight thousand, four hundred fifty-seven".