742724387 has 2 divisors, whose sum is σ = 742724388. Its totient is φ = 742724386.

The previous prime is 742724371. The next prime is 742724393. The reversal of 742724387 is 783427247.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 742724387 - 2⁴ = 742724371 is a prime.

It is not a weakly prime, because it can be changed into another prime (742724357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371362193 + 371362194.

It is an arithmetic number, because the mean of its divisors is an integer number (371362194).

Almost surely, 2^742724387 is an apocalyptic number.

742724387 is a deficient number, since it is larger than the sum of its proper divisors (1).

742724387 is an equidigital number, since it uses as much as digits as its factorization.

742724387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 526848, while the sum is 44.

The square root of 742724387 is about 27252.9702417920. The cubic root of 742724387 is about 905.6128189654.

The spelling of 742724387 in words is "seven hundred forty-two million, seven hundred twenty-four thousand, three hundred eighty-seven".