121075645 has 8 divisors (see below), whose sum is σ = 145472256. Its totient is φ = 96739536.

The previous prime is 121075639. The next prime is 121075681. The reversal of 121075645 is 546570121.

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

It is a cyclic number.

It is not a de Polignac number, because 121075645 - 2⁵ = 121075613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10597 + ... + 18826.

It is an arithmetic number, because the mean of its divisors is an integer number (18184032).

Almost surely, 2^121075645 is an apocalyptic number.

It is an amenable number.

121075645 is a deficient number, since it is larger than the sum of its proper divisors (24396611).

121075645 is an equidigital number, since it uses as much as digits as its factorization.

121075645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30251.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 121075645 is about 11003.4378718653. The cubic root of 121075645 is about 494.7117935931.

The spelling of 121075645 in words is "one hundred twenty-one million, seventy-five thousand, six hundred forty-five".