121605067 has 4 divisors (see below), whose sum is σ = 123420136. Its totient is φ = 119790000.

The previous prime is 121605059. The next prime is 121605089. The reversal of 121605067 is 760506121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121605067 - 2³ = 121605059 is a prime.

It is a super-4 number, since 4×121605067⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121605007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 907434 + ... + 907567.

It is an arithmetic number, because the mean of its divisors is an integer number (30855034).

Almost surely, 2^121605067 is an apocalyptic number.

121605067 is a deficient number, since it is larger than the sum of its proper divisors (1815069).

121605067 is an equidigital number, since it uses as much as digits as its factorization.

121605067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1815068.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 121605067 is about 11027.4687485388. The cubic root of 121605067 is about 495.4318131110.

The spelling of 121605067 in words is "one hundred twenty-one million, six hundred five thousand, sixty-seven".