121604505 has 32 divisors (see below), whose sum is σ = 214386048. Its totient is φ = 58368000.

The previous prime is 121604491. The next prime is 121604521. The reversal of 121604505 is 505406121.

It is not a de Polignac number, because 121604505 - 2¹³ = 121596313 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13017 + ... + 20313.

It is an arithmetic number, because the mean of its divisors is an integer number (6699564).

Almost surely, 2^121604505 is an apocalyptic number.

121604505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121604505 is a deficient number, since it is larger than the sum of its proper divisors (92781543).

121604505 is a wasteful number, since it uses less digits than its factorization.

121604505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7417.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 121604505 is about 11027.4432666870. The cubic root of 121604505 is about 495.4310498942.

The spelling of 121604505 in words is "one hundred twenty-one million, six hundred four thousand, five hundred five".