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7142965 = 51428593
BaseRepresentation
bin11011001111111000110101
3111102220022021
4123033320311
53312033330
6413033141
7114466654
oct33177065
914386267
107142965
114039685
1224857b1
13163130b
14d3d19b
1596167a
hex6cfe35

7142965 has 4 divisors (see below), whose sum is σ = 8571564. Its totient is φ = 5714368.

The previous prime is 7142959. The next prime is 7142981. The reversal of 7142965 is 5692417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5692417 = 9476011.

It can be written as a sum of positive squares in 2 ways, for example, as 4605316 + 2537649 = 2146^2 + 1593^2 .

It is a cyclic number.

It is not a de Polignac number, because 7142965 - 23 = 7142957 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 7142965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 714292 + ... + 714301.

It is an arithmetic number, because the mean of its divisors is an integer number (2142891).

Almost surely, 27142965 is an apocalyptic number.

It is an amenable number.

7142965 is a deficient number, since it is larger than the sum of its proper divisors (1428599).

7142965 is a wasteful number, since it uses less digits than its factorization.

7142965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428598.

The product of its digits is 15120, while the sum is 34.

The square root of 7142965 is about 2672.6325972718. The cubic root of 7142965 is about 192.5866478985.

The spelling of 7142965 in words is "seven million, one hundred forty-two thousand, nine hundred sixty-five".

Divisors: 1 5 1428593 7142965