742450073 has 4 divisors (see below), whose sum is σ = 745636788. Its totient is φ = 739263360.

The previous prime is 742450069. The next prime is 742450109. The reversal of 742450073 is 370054247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 370054247 = 1693 ⋅218579.

It can be written as a sum of positive squares in 2 ways, for example, as 532547929 + 209902144 = 23077^2 + 14488^2 .

It is a cyclic number.

It is not a de Polignac number, because 742450073 - 2² = 742450069 is a prime.

It is a super-2 number, since 2×742450073² = 1102464221795410658, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (742450063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1593008 + ... + 1593473.

It is an arithmetic number, because the mean of its divisors is an integer number (186409197).

Almost surely, 2^742450073 is an apocalyptic number.

It is an amenable number.

742450073 is a deficient number, since it is larger than the sum of its proper divisors (3186715).

742450073 is a wasteful number, since it uses less digits than its factorization.

742450073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3186714.

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

The square root of 742450073 is about 27247.9370411780. The cubic root of 742450073 is about 905.5013137785.

The spelling of 742450073 in words is "seven hundred forty-two million, four hundred fifty thousand, seventy-three".