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7072141 = 29324137
BaseRepresentation
bin11010111110100110001101
3111022022011011
4122332212031
53302302031
6411325221
7114053326
oct32764615
914268134
107072141
113aa044a
122450811
131607ccb
14d2144d
1594a6b1
hex6be98d

7072141 has 4 divisors (see below), whose sum is σ = 7096572. Its totient is φ = 7047712.

The previous prime is 7072133. The next prime is 7072151. The reversal of 7072141 is 1412707.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1412707 = 1974353.

It can be written as a sum of positive squares in 2 ways, for example, as 5978025 + 1094116 = 2445^2 + 1046^2 .

It is a cyclic number.

It is not a de Polignac number, because 7072141 - 23 = 7072133 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7072151) 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, 11776 + ... + 12361.

It is an arithmetic number, because the mean of its divisors is an integer number (1774143).

Almost surely, 27072141 is an apocalyptic number.

It is an amenable number.

7072141 is a deficient number, since it is larger than the sum of its proper divisors (24431).

7072141 is a wasteful number, since it uses less digits than its factorization.

7072141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24430.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 7072141 is about 2659.3497325474. The cubic root of 7072141 is about 191.9480201447.

Adding to 7072141 its reverse (1412707), we get a palindrome (8484848).

The spelling of 7072141 in words is "seven million, seventy-two thousand, one hundred forty-one".

Divisors: 1 293 24137 7072141