121263549 has 8 divisors (see below), whose sum is σ = 176383392. Its totient is φ = 73493040.

The previous prime is 121263539. The next prime is 121263553. The reversal of 121263549 is 945362121.

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

It is not a de Polignac number, because 121263549 - 2¹³ = 121255357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 3674653 = 121263549 / (1 + 2 + 1 + 2 + 6 + 3 + 5 + 4 + 9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121263539) 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, 1837294 + ... + 1837359.

It is an arithmetic number, because the mean of its divisors is an integer number (22047924).

Almost surely, 2^121263549 is an apocalyptic number.

It is an amenable number.

121263549 is a deficient number, since it is larger than the sum of its proper divisors (55119843).

121263549 is a wasteful number, since it uses less digits than its factorization.

121263549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3674667.

The product of its digits is 12960, while the sum is 33.

The square root of 121263549 is about 11011.9729839843. The cubic root of 121263549 is about 494.9675848583.

The spelling of 121263549 in words is "one hundred twenty-one million, two hundred sixty-three thousand, five hundred forty-nine".