742613 has 4 divisors (see below), whose sum is σ = 744768. Its totient is φ = 740460.

The previous prime is 742607. The next prime is 742619. The reversal of 742613 is 316247.

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: 316247 = 521 ⋅607.

It is an interprime number because it is at equal distance from previous prime (742607) and next prime (742619).

It is a cyclic number.

It is not a de Polignac number, because 742613 - 2⁶ = 742549 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742619) 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, 431 + ... + 1292.

It is an arithmetic number, because the mean of its divisors is an integer number (186192).

2⁷⁴²⁶¹³ is an apocalyptic number.

It is an amenable number.

742613 is a deficient number, since it is larger than the sum of its proper divisors (2155).

742613 is a wasteful number, since it uses less digits than its factorization.

742613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2154.

The product of its digits is 1008, while the sum is 23.

The square root of 742613 is about 861.7499637366. The cubic root of 742613 is about 90.5567544864.

The spelling of 742613 in words is "seven hundred forty-two thousand, six hundred thirteen".