121072 has 40 divisors (see below), whose sum is σ = 285696. Its totient is φ = 48576.

The previous prime is 121067. The next prime is 121081. The reversal of 121072 is 270121.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2553 + ... + 2599.

2¹²¹⁰⁷² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142848).

121072 is an abundant number, since it is smaller than the sum of its proper divisors (164624).

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

121072 is a wasteful number, since it uses less digits than its factorization.

121072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 121072 is about 347.9540199509. The cubic root of 121072 is about 49.4706829086.

Adding to 121072 its reverse (270121), we get a palindrome (391193).

The spelling of 121072 in words is "one hundred twenty-one thousand, seventy-two", and thus it is an iban number.