742507 has 2 divisors, whose sum is σ = 742508. Its totient is φ = 742506.

The previous prime is 742499. The next prime is 742513. The reversal of 742507 is 705247.

It is a strong prime.

It is an emirp because it is prime and its reverse (705247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 742507 - 2³ = 742499 is a prime.

It is an Ulam number.

742507 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (742537) 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, 371253 + 371254.

It is an arithmetic number, because the mean of its divisors is an integer number (371254).

2⁷⁴²⁵⁰⁷ is an apocalyptic number.

742507 is a deficient number, since it is larger than the sum of its proper divisors (1).

742507 is an equidigital number, since it uses as much as digits as its factorization.

742507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 742507 is about 861.6884587831. The cubic root of 742507 is about 90.5524456145.

The spelling of 742507 in words is "seven hundred forty-two thousand, five hundred seven".