742741 has 4 divisors (see below), whose sum is σ = 758592. Its totient is φ = 726892.

The previous prime is 742723. The next prime is 742757. The reversal of 742741 is 147247.

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, and also an emirpimes, since its reverse is a distinct semiprime: 147247 = 229 ⋅643.

It is a cyclic number.

It is not a de Polignac number, because 742741 - 2⁹ = 742229 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7855 + ... + 7948.

It is an arithmetic number, because the mean of its divisors is an integer number (189648).

2⁷⁴²⁷⁴¹ is an apocalyptic number.

It is an amenable number.

742741 is a deficient number, since it is larger than the sum of its proper divisors (15851).

742741 is a wasteful number, since it uses less digits than its factorization.

742741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15850.

The product of its digits is 1568, while the sum is 25.

The square root of 742741 is about 861.8242280187. The cubic root of 742741 is about 90.5619571059.

Adding to 742741 its reverse (147247), we get a palindrome (889988).

The spelling of 742741 in words is "seven hundred forty-two thousand, seven hundred forty-one", and thus it is an iban number.