121641652 has 24 divisors (see below), whose sum is σ = 235412352. Its totient is φ = 54532800.

The previous prime is 121641601. The next prime is 121641671. The reversal of 121641652 is 256146121.

It is a self number, because there is not a number n which added to its sum of digits gives 121641652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15724 + ... + 22147.

It is an arithmetic number, because the mean of its divisors is an integer number (9808848).

Almost surely, 2^121641652 is an apocalyptic number.

It is an amenable number.

121641652 is a deficient number, since it is larger than the sum of its proper divisors (113770700).

121641652 is a wasteful number, since it uses less digits than its factorization.

121641652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37959 (or 37957 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 121641652 is about 11029.1274360214. The cubic root of 121641652 is about 495.4814918400.

Adding to 121641652 its reverse (256146121), we get a palindrome (377787773).

The spelling of 121641652 in words is "one hundred twenty-one million, six hundred forty-one thousand, six hundred fifty-two".