121473447 has 16 divisors (see below), whose sum is σ = 166290432. Its totient is φ = 78828480.

The previous prime is 121473439. The next prime is 121473461. The reversal of 121473447 is 744374121.

It is not a de Polignac number, because 121473447 - 2³ = 121473439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121473437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73848 + ... + 75474.

It is an arithmetic number, because the mean of its divisors is an integer number (10393152).

Almost surely, 2^121473447 is an apocalyptic number.

121473447 is a deficient number, since it is larger than the sum of its proper divisors (44816985).

121473447 is a wasteful number, since it uses less digits than its factorization.

121473447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2278.

The product of its digits is 18816, while the sum is 33.

The square root of 121473447 is about 11021.4993081704. The cubic root of 121473447 is about 495.2530040165.

The spelling of 121473447 in words is "one hundred twenty-one million, four hundred seventy-three thousand, four hundred forty-seven".