121047472 has 40 divisors (see below), whose sum is σ = 288655136. Its totient is φ = 47886336.

The previous prime is 121047469. The next prime is 121047473. The reversal of 121047472 is 274740121.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 121047472.

It is not an unprimeable number, because it can be changed into a prime (121047473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40113 + ... + 43024.

Almost surely, 2^121047472 is an apocalyptic number.

It is an amenable number.

121047472 is an abundant number, since it is smaller than the sum of its proper divisors (167607664).

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

121047472 is a wasteful number, since it uses less digits than its factorization.

121047472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83165 (or 83159 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 121047472 is about 11002.1576065788. The cubic root of 121047472 is about 494.6734192459.

Adding to 121047472 its reverse (274740121), we get a palindrome (395787593).

The spelling of 121047472 in words is "one hundred twenty-one million, forty-seven thousand, four hundred seventy-two".