121409049 has 4 divisors (see below), whose sum is σ = 161878736. Its totient is φ = 80939364.

The previous prime is 121409047. The next prime is 121409191. The reversal of 121409049 is 940904121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 121409049 - 2¹ = 121409047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121409047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20234839 + ... + 20234844.

It is an arithmetic number, because the mean of its divisors is an integer number (40469684).

Almost surely, 2^121409049 is an apocalyptic number.

It is an amenable number.

121409049 is a deficient number, since it is larger than the sum of its proper divisors (40469687).

121409049 is an equidigital number, since it uses as much as digits as its factorization.

121409049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40469686.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 121409049 is about 11018.5774490176. The cubic root of 121409049 is about 495.1654706464.

The spelling of 121409049 in words is "one hundred twenty-one million, four hundred nine thousand, forty-nine".