742444441 has 4 divisors (see below), whose sum is σ = 760552884. Its totient is φ = 724336000.

The previous prime is 742444429. The next prime is 742444447. The reversal of 742444441 is 144444247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 144444247 = 733 ⋅197059.

It can be written as a sum of positive squares in 2 ways, for example, as 18619225 + 723825216 = 4315^2 + 26904^2 .

It is a cyclic number.

It is not a de Polignac number, because 742444441 - 2⁹ = 742443929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 742444397 and 742444406.

It is not an unprimeable number, because it can be changed into a prime (742444447) 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, 9054160 + ... + 9054241.

It is an arithmetic number, because the mean of its divisors is an integer number (190138221).

Almost surely, 2^742444441 is an apocalyptic number.

It is an amenable number.

742444441 is a deficient number, since it is larger than the sum of its proper divisors (18108443).

742444441 is a wasteful number, since it uses less digits than its factorization.

742444441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18108442.

The product of its digits is 57344, while the sum is 34.

The square root of 742444441 is about 27247.8336937086. The cubic root of 742444441 is about 905.4990241537.

Adding to 742444441 its reverse (144444247), we get a palindrome (886888688).

The spelling of 742444441 in words is "seven hundred forty-two million, four hundred forty-four thousand, four hundred forty-one".