742120543 has 2 divisors, whose sum is σ = 742120544. Its totient is φ = 742120542.

The previous prime is 742120523. The next prime is 742120579. The reversal of 742120543 is 345021247.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 742120543 - 2¹³ = 742112351 is a prime.

It is a super-3 number, since 3×742120543³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (742120523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371060271 + 371060272.

It is an arithmetic number, because the mean of its divisors is an integer number (371060272).

Almost surely, 2^742120543 is an apocalyptic number.

742120543 is a deficient number, since it is larger than the sum of its proper divisors (1).

742120543 is an equidigital number, since it uses as much as digits as its factorization.

742120543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 742120543 is about 27241.8894902685. The cubic root of 742120543 is about 905.3673276626.

The spelling of 742120543 in words is "seven hundred forty-two million, one hundred twenty thousand, five hundred forty-three".