7742513 has 4 divisors (see below), whose sum is σ = 8079168. Its totient is φ = 7405860.

The previous prime is 7742477. The next prime is 7742521. The reversal of 7742513 is 3152477.

7742513 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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: 3152477 = 181 ⋅17417.

It is a cyclic number.

It is not a de Polignac number, because 7742513 - 2¹⁴ = 7726129 is a prime.

It is a d-powerful number, because it can be written as 7 + 7⁸ + 4⁷ + 2¹³ + 5⁹ + 1 + 3 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7742533) 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, 168293 + ... + 168338.

It is an arithmetic number, because the mean of its divisors is an integer number (2019792).

Almost surely, 2^7742513 is an apocalyptic number.

It is an amenable number.

7742513 is a deficient number, since it is larger than the sum of its proper divisors (336655).

7742513 is a wasteful number, since it uses less digits than its factorization.

7742513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336654.

The product of its digits is 5880, while the sum is 29.

The square root of 7742513 is about 2782.5371515938. The cubic root of 7742513 is about 197.8308336410.

The spelling of 7742513 in words is "seven million, seven hundred forty-two thousand, five hundred thirteen".