121672 has 16 divisors (see below), whose sum is σ = 232560. Its totient is φ = 59664.

The previous prime is 121661. The next prime is 121687. The reversal of 121672 is 276121.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423 + ... + 649.

It is an arithmetic number, because the mean of its divisors is an integer number (14535).

2¹²¹⁶⁷² is an apocalyptic number.

It is an amenable number.

121672 is a deficient number, since it is larger than the sum of its proper divisors (110888).

121672 is a wasteful number, since it uses less digits than its factorization.

121672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 296 counting only the distinct ones).

The product of its digits is 168, while the sum is 19.

The square root of 121672 is about 348.8151372862. The cubic root of 121672 is about 49.5522693796.

Adding to 121672 its reverse (276121), we get a palindrome (397793).

Subtracting 121672 from its reverse (276121), we obtain a square (154449 = 393²).

The spelling of 121672 in words is "one hundred twenty-one thousand, six hundred seventy-two".