121432772 has 24 divisors (see below), whose sum is σ = 217709184. Its totient is φ = 59238432.

The previous prime is 121432769. The next prime is 121432789. The reversal of 121432772 is 277234121.

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, 73823 + ... + 75449.

It is an arithmetic number, because the mean of its divisors is an integer number (9071216).

Almost surely, 2^121432772 is an apocalyptic number.

It is an amenable number.

121432772 is a deficient number, since it is larger than the sum of its proper divisors (96276412).

121432772 is a wasteful number, since it uses less digits than its factorization.

121432772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075 (or 2073 counting only the distinct ones).

The product of its digits is 4704, while the sum is 29.

The square root of 121432772 is about 11019.6538965614. The cubic root of 121432772 is about 495.1977198775.

Adding to 121432772 its reverse (277234121), we get a palindrome (398666893).

The spelling of 121432772 in words is "one hundred twenty-one million, four hundred thirty-two thousand, seven hundred seventy-two".