121139149 has 8 divisors (see below), whose sum is σ = 123158880. Its totient is φ = 119125776.

The previous prime is 121139143. The next prime is 121139171. The reversal of 121139149 is 941931121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121139149 - 2⁹ = 121138637 is a prime.

It is a super-3 number, since 3×121139149³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121139149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121139143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50622 + ... + 52960.

It is an arithmetic number, because the mean of its divisors is an integer number (15394860).

Almost surely, 2^121139149 is an apocalyptic number.

It is an amenable number.

121139149 is a deficient number, since it is larger than the sum of its proper divisors (2019731).

121139149 is an equidigital number, since it uses as much as digits as its factorization.

121139149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3179.

The product of its digits is 1944, while the sum is 31.

The square root of 121139149 is about 11006.3231371789. The cubic root of 121139149 is about 494.7982703484.

The spelling of 121139149 in words is "one hundred twenty-one million, one hundred thirty-nine thousand, one hundred forty-nine".