742859779 has 2 divisors, whose sum is σ = 742859780. Its totient is φ = 742859778.

The previous prime is 742859729. The next prime is 742859783. The reversal of 742859779 is 977958247.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 742859779 - 2¹³ = 742851587 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (742859729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371429889 + 371429890.

It is an arithmetic number, because the mean of its divisors is an integer number (371429890).

Almost surely, 2^742859779 is an apocalyptic number.

742859779 is a deficient number, since it is larger than the sum of its proper divisors (1).

742859779 is an equidigital number, since it uses as much as digits as its factorization.

742859779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8890560, while the sum is 58.

The square root of 742859779 is about 27255.4541147272. The cubic root of 742859779 is about 905.6678439892.

The spelling of 742859779 in words is "seven hundred forty-two million, eight hundred fifty-nine thousand, seven hundred seventy-nine".