121894465 has 64 divisors (see below), whose sum is σ = 192614400. Its totient is φ = 71850240.

The previous prime is 121894463. The next prime is 121894477. The reversal of 121894465 is 564498121.

It is not a de Polignac number, because 121894465 - 2¹ = 121894463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121894463) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 612436 + ... + 612634.

It is an arithmetic number, because the mean of its divisors is an integer number (3009600).

Almost surely, 2^121894465 is an apocalyptic number.

It is an amenable number.

121894465 is a deficient number, since it is larger than the sum of its proper divisors (70719935).

121894465 is a wasteful number, since it uses less digits than its factorization.

121894465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302.

The product of its digits is 69120, while the sum is 40.

The square root of 121894465 is about 11040.5826386111. The cubic root of 121894465 is about 495.8245143705.

The spelling of 121894465 in words is "one hundred twenty-one million, eight hundred ninety-four thousand, four hundred sixty-five".