121667424 has 48 divisors (see below), whose sum is σ = 333268992. Its totient is φ = 38791808.

The previous prime is 121667423. The next prime is 121667449. The reversal of 121667424 is 424766121.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121667423) 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 7 ways as a sum of consecutive naturals, for example, 25344 + ... + 29759.

It is an arithmetic number, because the mean of its divisors is an integer number (6943104).

Almost surely, 2^121667424 is an apocalyptic number.

It is an amenable number.

121667424 is an abundant number, since it is smaller than the sum of its proper divisors (211601568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121667424 is a wasteful number, since it uses less digits than its factorization.

121667424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55139 (or 55131 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 121667424 is about 11030.2957349293. The cubic root of 121667424 is about 495.5164816292.

The spelling of 121667424 in words is "one hundred twenty-one million, six hundred sixty-seven thousand, four hundred twenty-four".