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42499 is a prime number
BaseRepresentation
bin1010011000000011
32011022001
422120003
52324444
6524431
7234622
oct123003
964261
1042499
1129a26
1220717
1316462
14116b9
15c8d4
hexa603

42499 has 2 divisors, whose sum is σ = 42500. Its totient is φ = 42498.

The previous prime is 42491. The next prime is 42509. The reversal of 42499 is 99424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42499 - 23 = 42491 is a prime.

42499 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (42491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21249 + 21250.

It is an arithmetic number, because the mean of its divisors is an integer number (21250).

242499 is an apocalyptic number.

42499 is a deficient number, since it is larger than the sum of its proper divisors (1).

42499 is an equidigital number, since it uses as much as digits as its factorization.

42499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 28.

The square root of 42499 is about 206.1528559104. The cubic root of 42499 is about 34.8973865253.

The spelling of 42499 in words is "forty-two thousand, four hundred ninety-nine".