121673445 has 48 divisors (see below), whose sum is σ = 206079552. Its totient is φ = 61259520.

The previous prime is 121673443. The next prime is 121673477. The reversal of 121673445 is 544376121.

It is not a de Polignac number, because 121673445 - 2¹ = 121673443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121673441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1137082 + ... + 1137188.

It is an arithmetic number, because the mean of its divisors is an integer number (4293324).

Almost surely, 2^121673445 is an apocalyptic number.

121673445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121673445 is a deficient number, since it is larger than the sum of its proper divisors (84406107).

121673445 is a wasteful number, since it uses less digits than its factorization.

121673445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 199 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 121673445 is about 11030.5686616783. The cubic root of 121673445 is about 495.5246554291.

The spelling of 121673445 in words is "one hundred twenty-one million, six hundred seventy-three thousand, four hundred forty-five".