742430057 has 2 divisors, whose sum is σ = 742430058. Its totient is φ = 742430056.

The previous prime is 742430011. The next prime is 742430089. The reversal of 742430057 is 750034247.

It is an a-pointer prime, because the next prime (742430089) can be obtained adding 742430057 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 579076096 + 163353961 = 24064^2 + 12781^2 .

It is a cyclic number.

It is not a de Polignac number, because 742430057 - 2²⁸ = 473994601 is a prime.

It is not a weakly prime, because it can be changed into another prime (742432057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371215028 + 371215029.

It is an arithmetic number, because the mean of its divisors is an integer number (371215029).

Almost surely, 2^742430057 is an apocalyptic number.

It is an amenable number.

742430057 is a deficient number, since it is larger than the sum of its proper divisors (1).

742430057 is an equidigital number, since it uses as much as digits as its factorization.

742430057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 742430057 is about 27247.5697448415. The cubic root of 742430057 is about 905.4931764515.

The spelling of 742430057 in words is "seven hundred forty-two million, four hundred thirty thousand, fifty-seven".