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BaseRepresentation
bin11101101101100100
320011221102
4131231210
512343300
62335232
71014545
oct355544
9204842
10121700
1183487
125a518
1343517
14324cc
15260d5
hex1db64

121700 has 18 divisors (see below), whose sum is σ = 264306. Its totient is φ = 48640.

The previous prime is 121697. The next prime is 121711. The reversal of 121700 is 7121.

It can be written as a sum of positive squares in 3 ways, for example, as 3364 + 118336 = 58^2 + 344^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 509 + ... + 708.

2121700 is an apocalyptic number.

121700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121700 is an abundant number, since it is smaller than the sum of its proper divisors (142606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121700 is a wasteful number, since it uses less digits than its factorization.

121700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231 (or 1224 counting only the distinct ones).

The product of its (nonzero) digits is 14, while the sum is 11.

The square root of 121700 is about 348.8552708502. The cubic root of 121700 is about 49.5560701914.

Adding to 121700 its reverse (7121), we get a palindrome (128821).

The spelling of 121700 in words is "one hundred twenty-one thousand, seven hundred", and thus it is an iban number.