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7142969 = 53307439
BaseRepresentation
bin11011001111111000111001
3111102220022102
4123033320321
53312033334
6413033145
7114466661
oct33177071
914386272
107142969
114039689
1224857b5
131631312
14d3d1a1
1596167e
hex6cfe39

7142969 has 8 divisors (see below), whose sum is σ = 7318080. Its totient is φ = 6969456.

The previous prime is 7142959. The next prime is 7142981. The reversal of 7142969 is 9692417.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7142969 - 28 = 7142713 is a prime.

It is a super-2 number, since 2×71429692 = 102044012269922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7142909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16052 + ... + 16490.

It is an arithmetic number, because the mean of its divisors is an integer number (914760).

Almost surely, 27142969 is an apocalyptic number.

It is an amenable number.

7142969 is a deficient number, since it is larger than the sum of its proper divisors (175111).

7142969 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (7142968) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (799).

7142969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799.

The product of its digits is 27216, while the sum is 38.

The square root of 7142969 is about 2672.6333455976. The cubic root of 7142969 is about 192.5866838474.

The spelling of 7142969 in words is "seven million, one hundred forty-two thousand, nine hundred sixty-nine".

Divisors: 1 53 307 439 16271 23267 134773 7142969