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42125005 = 5133072111
BaseRepresentation
bin1010000010110…
…0011011001101
32221021011122101
42200230123031
541241000010
64102515101
71021025266
oct240543315
987234571
1042125005
112186215a
1212135a91
13895bb50
14584796d
153a7173a
hex282c6cd

42125005 has 16 divisors (see below), whose sum is σ = 54641664. Its totient is φ = 30991680.

The previous prime is 42124987. The next prime is 42125047. The reversal of 42125005 is 50052124.

It is not a de Polignac number, because 42125005 - 29 = 42124493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18900 + ... + 21010.

It is an arithmetic number, because the mean of its divisors is an integer number (3415104).

Almost surely, 242125005 is an apocalyptic number.

It is an amenable number.

42125005 is a deficient number, since it is larger than the sum of its proper divisors (12516659).

42125005 is a wasteful number, since it uses less digits than its factorization.

42125005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 42125005 is about 6490.3778780592. The cubic root of 42125005 is about 347.9471806258.

Adding to 42125005 its reverse (50052124), we get a palindrome (92177129).

The spelling of 42125005 in words is "forty-two million, one hundred twenty-five thousand, five".

Divisors: 1 5 13 65 307 1535 2111 3991 10555 19955 27443 137215 648077 3240385 8425001 42125005