742686421049 has 2 divisors, whose sum is σ = 742686421050. Its totient is φ = 742686421048.

The previous prime is 742686420989. The next prime is 742686421093. The reversal of 742686421049 is 940124686247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 478181931049 + 264504490000 = 691507^2 + 514300^2 .

It is a cyclic number.

It is not a de Polignac number, because 742686421049 - 2¹⁶ = 742686355513 is a prime.

It is not a weakly prime, because it can be changed into another prime (742686421849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371343210524 + 371343210525.

It is an arithmetic number, because the mean of its divisors is an integer number (371343210525).

Almost surely, 2^742686421049 is an apocalyptic number.

It is an amenable number.

742686421049 is a deficient number, since it is larger than the sum of its proper divisors (1).

742686421049 is an equidigital number, since it uses as much as digits as its factorization.

742686421049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4644864, while the sum is 53.

The spelling of 742686421049 in words is "seven hundred forty-two billion, six hundred eighty-six million, four hundred twenty-one thousand, forty-nine".