121471047 has 24 divisors (see below), whose sum is σ = 185203200. Its totient is φ = 76506768.

The previous prime is 121471013. The next prime is 121471079. The reversal of 121471047 is 740174121.

It is not a de Polignac number, because 121471047 - 2¹² = 121466951 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121471047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121473047) 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 23 ways as a sum of consecutive naturals, for example, 81168 + ... + 82650.

It is an arithmetic number, because the mean of its divisors is an integer number (7716800).

Almost surely, 2^121471047 is an apocalyptic number.

121471047 is a deficient number, since it is larger than the sum of its proper divisors (63732153).

121471047 is a wasteful number, since it uses less digits than its factorization.

121471047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987 (or 1984 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 121471047 is about 11021.3904295239. The cubic root of 121471047 is about 495.2497423571.

The spelling of 121471047 in words is "one hundred twenty-one million, four hundred seventy-one thousand, forty-seven".