121284445 has 8 divisors (see below), whose sum is σ = 145836000. Its totient is φ = 96831120.

The previous prime is 121284439. The next prime is 121284491. The reversal of 121284445 is 544482121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121284445 - 2¹⁵ = 121251677 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21811 + ... + 26800.

It is an arithmetic number, because the mean of its divisors is an integer number (18229500).

Almost surely, 2^121284445 is an apocalyptic number.

It is an amenable number.

121284445 is a deficient number, since it is larger than the sum of its proper divisors (24551555).

121284445 is an equidigital number, since it uses as much as digits as its factorization.

121284445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49115.

The product of its digits is 10240, while the sum is 31.

The square root of 121284445 is about 11012.9217285877. The cubic root of 121284445 is about 494.9960139801.

The spelling of 121284445 in words is "one hundred twenty-one million, two hundred eighty-four thousand, four hundred forty-five".