121039164 has 48 divisors (see below), whose sum is σ = 315453600. Its totient is φ = 40134528.

The previous prime is 121039157. The next prime is 121039181. The reversal of 121039164 is 461930121.

121039164 is a `hidden beast` number, since 1 + 210 + 391 + 64 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18432 + ... + 24120.

It is an arithmetic number, because the mean of its divisors is an integer number (6571950).

Almost surely, 2^121039164 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 121039164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157726800).

121039164 is an abundant number, since it is smaller than the sum of its proper divisors (194414436).

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

121039164 is a wasteful number, since it uses less digits than its factorization.

121039164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5899 (or 5891 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 121039164 is about 11001.7800377939. The cubic root of 121039164 is about 494.6621018106.

Adding to 121039164 its reverse (461930121), we get a palindrome (582969285).

The spelling of 121039164 in words is "one hundred twenty-one million, thirty-nine thousand, one hundred sixty-four".