121450645 has 8 divisors (see below), whose sum is σ = 146719800. Its totient is φ = 96507840.

The previous prime is 121450643. The next prime is 121450657. The reversal of 121450645 is 546054121.

It can be written as a sum of positive squares in 4 ways, for example, as 9746884 + 111703761 = 3122^2 + 10569^2 .

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

It is not a de Polignac number, because 121450645 - 2¹ = 121450643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121450643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80766 + ... + 82255.

It is an arithmetic number, because the mean of its divisors is an integer number (18339975).

Almost surely, 2^121450645 is an apocalyptic number.

It is an amenable number.

121450645 is a deficient number, since it is larger than the sum of its proper divisors (25269155).

121450645 is a wasteful number, since it uses less digits than its factorization.

121450645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163175.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 121450645 is about 11020.4648268573. The cubic root of 121450645 is about 495.2220137989. Note that the first 3 decimals are identical.

The spelling of 121450645 in words is "one hundred twenty-one million, four hundred fifty thousand, six hundred forty-five".