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242501 = 74101
BaseRepresentation
bin111011001101000101
3110022122112
4323031011
530230001
65110405
72030000
oct731505
9408575
10242501
11156216
12b8405
13864bc
1464537
154bcbb
hex3b345

242501 has 10 divisors (see below), whose sum is σ = 285702. Its totient is φ = 205800.

The previous prime is 242491. The next prime is 242509. The reversal of 242501 is 105242.

It can be written as a sum of positive squares in only one way, i.e., 240100 + 2401 = 490^2 + 49^2 .

It is a de Polignac number, because none of the positive numbers 2k-242501 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 242501.

It is not an unprimeable number, because it can be changed into a prime (242509) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2351 + ... + 2451.

2242501 is an apocalyptic number.

It is an amenable number.

242501 is a deficient number, since it is larger than the sum of its proper divisors (43201).

242501 is an frugal number, since it uses more digits than its factorization.

242501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 242501 is about 492.4439054349. The cubic root of 242501 is about 62.3597709416.

Adding to 242501 its reverse (105242), we get a palindrome (347743).

The spelling of 242501 in words is "two hundred forty-two thousand, five hundred one".

Divisors: 1 7 49 101 343 707 2401 4949 34643 242501