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102122 = 251061
BaseRepresentation
bin11000111011101010
312012002022
4120323222
511231442
62104442
7603506
oct307352
9165068
10102122
116a7a9
124b122
1337637
1429306
15203d2
hex18eea

102122 has 4 divisors (see below), whose sum is σ = 153186. Its totient is φ = 51060.

The previous prime is 102121. The next prime is 102139. The reversal of 102122 is 221201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 101761 + 361 = 319^2 + 19^2 .

It is not an unprimeable number, because it can be changed into a prime (102121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25529 + ... + 25532.

2102122 is an apocalyptic number.

102122 is a deficient number, since it is larger than the sum of its proper divisors (51064).

102122 is an equidigital number, since it uses as much as digits as its factorization.

102122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51063.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 102122 is about 319.5653297841. The cubic root of 102122 is about 46.7419081003.

Adding to 102122 its reverse (221201), we get a palindrome (323323).

The spelling of 102122 in words is "one hundred two thousand, one hundred twenty-two", and thus it is an iban number.

Divisors: 1 2 51061 102122