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7145741 = 61311657
BaseRepresentation
bin11011010000100100001101
3111110001010002
4123100210031
53312130431
6413054045
7114511031
oct33204415
914401102
107145741
114040779
122487325
131632665
14d401c1
159623cb
hex6d090d

7145741 has 4 divisors (see below), whose sum is σ = 7158012. Its totient is φ = 7133472.

The previous prime is 7145737. The next prime is 7145759. The reversal of 7145741 is 1475417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1475417 = 5692593.

It can be written as a sum of positive squares in 2 ways, for example, as 1901641 + 5244100 = 1379^2 + 2290^2 .

It is a cyclic number.

It is not a de Polignac number, because 7145741 - 22 = 7145737 is a prime.

It is a super-2 number, since 2×71457412 = 102123228878162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7145701) 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, 5216 + ... + 6441.

It is an arithmetic number, because the mean of its divisors is an integer number (1789503).

Almost surely, 27145741 is an apocalyptic number.

It is an amenable number.

7145741 is a deficient number, since it is larger than the sum of its proper divisors (12271).

7145741 is a wasteful number, since it uses less digits than its factorization.

7145741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12270.

The product of its digits is 3920, while the sum is 29.

The square root of 7145741 is about 2673.1518849478. The cubic root of 7145741 is about 192.6115932488.

The spelling of 7145741 in words is "seven million, one hundred forty-five thousand, seven hundred forty-one".

Divisors: 1 613 11657 7145741