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42107523 = 345730713
BaseRepresentation
bin1010000010100…
…0001010000011
32221020021122220
42200220022003
541234420043
64102302123
71020623313
oct240501203
987207586
1042107523
1121850007
1212127943
138953bc3
145841443
153a6b483
hex2828283

42107523 has 8 divisors (see below), whose sum is σ = 56268048. Its totient is φ = 28009344.

The previous prime is 42107519. The next prime is 42107531. The reversal of 42107523 is 32570124.

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

It is not a de Polignac number, because 42107523 - 22 = 42107519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42107493 and 42107502.

It is not an unprimeable number, because it can be changed into a prime (42107543) 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, 13986 + ... + 16727.

It is an arithmetic number, because the mean of its divisors is an integer number (7033506).

Almost surely, 242107523 is an apocalyptic number.

42107523 is a deficient number, since it is larger than the sum of its proper divisors (14160525).

42107523 is a wasteful number, since it uses less digits than its factorization.

42107523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31173.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 42107523 is about 6489.0309754231. The cubic root of 42107523 is about 347.8990409340.

Adding to 42107523 its reverse (32570124), we get a palindrome (74677647).

The spelling of 42107523 in words is "forty-two million, one hundred seven thousand, five hundred twenty-three".

Divisors: 1 3 457 1371 30713 92139 14035841 42107523