742666207 has 4 divisors (see below), whose sum is σ = 742737160. Its totient is φ = 742595256.

The previous prime is 742666193. The next prime is 742666219. The reversal of 742666207 is 702666247.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 702666247 = 311 ⋅2259377.

It is a cyclic number.

It is not a de Polignac number, because 742666207 - 2¹⁵ = 742633439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 742666207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742666237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16332 + ... + 41857.

It is an arithmetic number, because the mean of its divisors is an integer number (185684290).

Almost surely, 2^742666207 is an apocalyptic number.

742666207 is a deficient number, since it is larger than the sum of its proper divisors (70953).

742666207 is a wasteful number, since it uses less digits than its factorization.

742666207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70952.

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 742666207 is about 27251.9028142990. The cubic root of 742666207 is about 905.5891718223.

Adding to 742666207 its sum of digits (40), we get a palindrome (742666247).

The spelling of 742666207 in words is "seven hundred forty-two million, six hundred sixty-six thousand, two hundred seven".