742021481 has 4 divisors (see below), whose sum is σ = 742108752. Its totient is φ = 741934212.

The previous prime is 742021471. The next prime is 742021513. The reversal of 742021481 is 184120247.

742021481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 742021481 - 2¹⁴ = 742005097 is a prime.

It is a super-2 number, since 2×742021481² = 1101191756530866722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (742021471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29315 + ... + 48408.

It is an arithmetic number, because the mean of its divisors is an integer number (185527188).

Almost surely, 2^742021481 is an apocalyptic number.

It is an amenable number.

742021481 is a deficient number, since it is larger than the sum of its proper divisors (87271).

742021481 is an equidigital number, since it uses as much as digits as its factorization.

742021481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87270.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 742021481 is about 27240.0712370581. The cubic root of 742021481 is about 905.3270415348.

The spelling of 742021481 in words is "seven hundred forty-two million, twenty-one thousand, four hundred eighty-one".