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9042231 = 311274007
BaseRepresentation
bin100010011111…
…100100110111
3122000101121110
4202133210313
54303322411
6521450103
7136600122
oct42374467
918011543
109042231
115116620
123040933
131b47943
1412b53b9
15bd92a6
hex89f937

9042231 has 8 divisors (see below), whose sum is σ = 13152384. Its totient is φ = 5480120.

The previous prime is 9042223. The next prime is 9042239. The reversal of 9042231 is 1322409.

It is an interprime number because it is at equal distance from previous prime (9042223) and next prime (9042239).

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 9042231 - 23 = 9042223 is a prime.

It is a super-2 number, since 2×90422312 = 163523882914722, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9042198 and 9042207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9042239) 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, 136971 + ... + 137036.

It is an arithmetic number, because the mean of its divisors is an integer number (1644048).

Almost surely, 29042231 is an apocalyptic number.

9042231 is a deficient number, since it is larger than the sum of its proper divisors (4110153).

9042231 is a wasteful number, since it uses less digits than its factorization.

9042231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274021.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 9042231 is about 3007.0302625680. The cubic root of 9042231 is about 208.3332229688. Note that the first 3 decimals are identical.

It can be divided in two parts, 90422 and 31, that multiplied together give a palindrome (2803082).

The spelling of 9042231 in words is "nine million, forty-two thousand, two hundred thirty-one".

Divisors: 1 3 11 33 274007 822021 3014077 9042231