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83142297 = 3271319719
BaseRepresentation
bin1001111010010…
…10011010011001
312210110001210100
410331022122121
5132241023142
612130010013
72026461240
oct475123231
9183401710
1083142297
1142a28047
1223a16909
13142c0734
14b083957
157474b4c
hex4f4a699

83142297 has 12 divisors (see below), whose sum is σ = 137250880. Its totient is φ = 47509848.

The previous prime is 83142259. The next prime is 83142313. The reversal of 83142297 is 79224138.

It is not a de Polignac number, because 83142297 - 215 = 83109529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83142247) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 659797 + ... + 659922.

Almost surely, 283142297 is an apocalyptic number.

It is an amenable number.

83142297 is a deficient number, since it is larger than the sum of its proper divisors (54108583).

83142297 is a wasteful number, since it uses less digits than its factorization.

83142297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319732 (or 1319729 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 83142297 is about 9118.2397972416. The cubic root of 83142297 is about 436.4562057754.

The spelling of 83142297 in words is "eighty-three million, one hundred forty-two thousand, two hundred ninety-seven".

Divisors: 1 3 7 9 21 63 1319719 3959157 9238033 11877471 27714099 83142297