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121139 is a prime number
BaseRepresentation
bin11101100100110011
320011011122
4131210303
512334024
62332455
71013114
oct354463
9204148
10121139
1183017
125a12b
13431a5
143220b
1525d5e
hex1d933

121139 has 2 divisors, whose sum is σ = 121140. Its totient is φ = 121138.

The previous prime is 121123. The next prime is 121151. The reversal of 121139 is 931121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121139 - 24 = 121123 is a prime.

It is a super-3 number, since 3×1211393 = 5333019939625857, which contains 333 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (121169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60569 + 60570.

It is an arithmetic number, because the mean of its divisors is an integer number (60570).

2121139 is an apocalyptic number.

121139 is a deficient number, since it is larger than the sum of its proper divisors (1).

121139 is an equidigital number, since it uses as much as digits as its factorization.

121139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54, while the sum is 17.

The square root of 121139 is about 348.0502837235. The cubic root of 121139 is about 49.4798067483.

The spelling of 121139 in words is "one hundred twenty-one thousand, one hundred thirty-nine".