121436424149 has 8 divisors (see below), whose sum is σ = 122233247640. Its totient is φ = 120642159616.

The previous prime is 121436424091. The next prime is 121436424199. The reversal of 121436424149 is 941424634121.

It can be written as a sum of positive squares in 4 ways, for example, as 6689604100 + 114746820049 = 81790^2 + 338743^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121436424149 is a prime.

It is a super-2 number, since 2×121436424149² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121436424199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544472 + ... + 734385.

It is an arithmetic number, because the mean of its divisors is an integer number (15279155955).

Almost surely, 2^121436424149 is an apocalyptic number.

It is an amenable number.

121436424149 is a deficient number, since it is larger than the sum of its proper divisors (796823491).

121436424149 is a wasteful number, since it uses less digits than its factorization.

121436424149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279479.

The product of its digits is 165888, while the sum is 41.

The spelling of 121436424149 in words is "one hundred twenty-one billion, four hundred thirty-six million, four hundred twenty-four thousand, one hundred forty-nine".