6139121 has 2 divisors, whose sum is σ = 6139122. Its totient is φ = 6139120.

The previous prime is 6139117. The next prime is 6139123. The reversal of 6139121 is 1219316.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5664400 + 474721 = 2380^2 + 689^2 .

It is a cyclic number.

It is not a de Polignac number, because 6139121 - 2² = 6139117 is a prime.

Together with 6139123, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₄₂₁₇₅₄ and since 6139121 and 421754 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (6139123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3069560 + 3069561.

It is an arithmetic number, because the mean of its divisors is an integer number (3069561).

Almost surely, 2^6139121 is an apocalyptic number.

It is an amenable number.

6139121 is a deficient number, since it is larger than the sum of its proper divisors (1).

6139121 is an equidigital number, since it uses as much as digits as its factorization.

6139121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 23.

The square root of 6139121 is about 2477.7249645592. The cubic root of 6139121 is about 183.1057845392.

The spelling of 6139121 in words is "six million, one hundred thirty-nine thousand, one hundred twenty-one".