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42085033 = 200321011
BaseRepresentation
bin1010000010001…
…0101010101001
32221012010210221
42200202222221
541233210113
64102010041
71020500614
oct240425251
987163727
1042085033
1121835121
1212116921
1389468b3
14583717b
153a6498d
hex2822aa9

42085033 has 4 divisors (see below), whose sum is σ = 42108048. Its totient is φ = 42062020.

The previous prime is 42085007. The next prime is 42085049. The reversal of 42085033 is 33058024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42085033 - 213 = 42076841 is a prime.

It is a super-2 number, since 2×420850332 = 3542300005222178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42084989 and 42085007.

It is not an unprimeable number, because it can be changed into a prime (42085093) 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, 8503 + ... + 12508.

It is an arithmetic number, because the mean of its divisors is an integer number (10527012).

Almost surely, 242085033 is an apocalyptic number.

It is an amenable number.

42085033 is a deficient number, since it is larger than the sum of its proper divisors (23015).

42085033 is a wasteful number, since it uses less digits than its factorization.

42085033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23014.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 42085033 is about 6487.2978195856. The cubic root of 42085033 is about 347.8370912531.

The spelling of 42085033 in words is "forty-two million, eighty-five thousand, thirty-three".

Divisors: 1 2003 21011 42085033