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7242461 = 40118061
BaseRepresentation
bin11011101000001011011101
3111121221210022
4123220023131
53323224321
6415121525
7115363022
oct33501335
914557708
107242461
1140a7406
1225132a5
1316676a5
14d67549
15980dab
hex6e82dd

7242461 has 4 divisors (see below), whose sum is σ = 7260924. Its totient is φ = 7224000.

The previous prime is 7242457. The next prime is 7242479. The reversal of 7242461 is 1642427.

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 6708100 + 534361 = 2590^2 + 731^2 .

It is a cyclic number.

It is not a de Polignac number, because 7242461 - 22 = 7242457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7242461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7242451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8630 + ... + 9431.

It is an arithmetic number, because the mean of its divisors is an integer number (1815231).

Almost surely, 27242461 is an apocalyptic number.

It is an amenable number.

7242461 is a deficient number, since it is larger than the sum of its proper divisors (18463).

7242461 is a wasteful number, since it uses less digits than its factorization.

7242461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18462.

The product of its digits is 2688, while the sum is 26.

The square root of 7242461 is about 2691.1820822828. The cubic root of 7242461 is about 193.4767224679.

Adding to 7242461 its reverse (1642427), we get a palindrome (8884888).

The spelling of 7242461 in words is "seven million, two hundred forty-two thousand, four hundred sixty-one".

Divisors: 1 401 18061 7242461