121049547 has 4 divisors (see below), whose sum is σ = 161399400. Its totient is φ = 80699696.

The previous prime is 121049543. The next prime is 121049557. The reversal of 121049547 is 745940121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121049547 - 2² = 121049543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121049543) 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, 20174922 + ... + 20174927.

It is an arithmetic number, because the mean of its divisors is an integer number (40349850).

Almost surely, 2^121049547 is an apocalyptic number.

121049547 is a deficient number, since it is larger than the sum of its proper divisors (40349853).

121049547 is an equidigital number, since it uses as much as digits as its factorization.

121049547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40349852.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 121049547 is about 11002.2519058600. The cubic root of 121049547 is about 494.6762457994.

Adding to 121049547 its reverse (745940121), we get a palindrome (866989668).

The spelling of 121049547 in words is "one hundred twenty-one million, forty-nine thousand, five hundred forty-seven".