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7242071 = 71102001
BaseRepresentation
bin11011101000000101010111
3111121221020212
4123220011113
53323221241
6415120035
7115361624
oct33500527
914557225
107242071
1140a7091
12251301b
131667465
14d6734b
15980beb
hex6e8157

7242071 has 4 divisors (see below), whose sum is σ = 7344144. Its totient is φ = 7140000.

The previous prime is 7242061. The next prime is 7242077. The reversal of 7242071 is 1702427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1702427 = 3154917.

It is a cyclic number.

It is not a de Polignac number, because 7242071 - 26 = 7242007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7242077) 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, 50930 + ... + 51071.

It is an arithmetic number, because the mean of its divisors is an integer number (1836036).

Almost surely, 27242071 is an apocalyptic number.

7242071 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

7242071 is a deficient number, since it is larger than the sum of its proper divisors (102073).

7242071 is a wasteful number, since it uses less digits than its factorization.

7242071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102072.

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 7242071 is about 2691.1096224420. The cubic root of 7242071 is about 193.4732495565.

Adding to 7242071 its reverse (1702427), we get a palindrome (8944498).

The spelling of 7242071 in words is "seven million, two hundred forty-two thousand, seventy-one".

Divisors: 1 71 102001 7242071