121263547 has 8 divisors (see below), whose sum is σ = 123889392. Its totient is φ = 118658400.

The previous prime is 121263539. The next prime is 121263553. The reversal of 121263547 is 745362121.

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 121263547 - 2³ = 121263539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121273547) 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, 6972 + ... + 17062.

It is an arithmetic number, because the mean of its divisors is an integer number (15486174).

Almost surely, 2^121263547 is an apocalyptic number.

121263547 is a deficient number, since it is larger than the sum of its proper divisors (2625845).

121263547 is a wasteful number, since it uses less digits than its factorization.

121263547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10349.

The product of its digits is 10080, while the sum is 31.

The square root of 121263547 is about 11011.9728931740. The cubic root of 121263547 is about 494.9675821371.

The spelling of 121263547 in words is "one hundred twenty-one million, two hundred sixty-three thousand, five hundred forty-seven".