121575401 has 8 divisors (see below), whose sum is σ = 127077504. Its totient is φ = 116091360.

The previous prime is 121575383. The next prime is 121575403. The reversal of 121575401 is 104575121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121575401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121575403) 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, 10325 + ... + 18701.

It is an arithmetic number, because the mean of its divisors is an integer number (15884688).

Almost surely, 2^121575401 is an apocalyptic number.

It is an amenable number.

121575401 is a deficient number, since it is larger than the sum of its proper divisors (5502103).

121575401 is an equidigital number, since it uses as much as digits as its factorization.

121575401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9031.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 121575401 is about 11026.1235708657. The cubic root of 121575401 is about 495.3915223680.

The spelling of 121575401 in words is "one hundred twenty-one million, five hundred seventy-five thousand, four hundred one".