742521341 has 4 divisors (see below), whose sum is σ = 754693884. Its totient is φ = 730348800.

The previous prime is 742521319. The next prime is 742521343. The reversal of 742521341 is 143125247.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 399160441 + 343360900 = 19979^2 + 18530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742521341 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742521343) 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, 6086180 + ... + 6086301.

It is an arithmetic number, because the mean of its divisors is an integer number (188673471).

Almost surely, 2^742521341 is an apocalyptic number.

It is an amenable number.

742521341 is a deficient number, since it is larger than the sum of its proper divisors (12172543).

742521341 is a wasteful number, since it uses less digits than its factorization.

742521341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12172542.

The product of its digits is 6720, while the sum is 29.

The square root of 742521341 is about 27249.2447785255. The cubic root of 742521341 is about 905.5302859637.

Adding to 742521341 its reverse (143125247), we get a palindrome (885646588).

The spelling of 742521341 in words is "seven hundred forty-two million, five hundred twenty-one thousand, three hundred forty-one".