121894535 has 16 divisors (see below), whose sum is σ = 167635776. Its totient is φ = 83351808.

The previous prime is 121894529. The next prime is 121894537. The reversal of 121894535 is 535498121.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121894535 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121894537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8387 + ... + 17723.

It is an arithmetic number, because the mean of its divisors is an integer number (10477236).

Almost surely, 2^121894535 is an apocalyptic number.

121894535 is a deficient number, since it is larger than the sum of its proper divisors (45741241).

121894535 is an equidigital number, since it uses as much as digits as its factorization.

121894535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9722.

The product of its digits is 43200, while the sum is 38.

The square root of 121894535 is about 11040.5858087332. The cubic root of 121894535 is about 495.8246092824.

The spelling of 121894535 in words is "one hundred twenty-one million, eight hundred ninety-four thousand, five hundred thirty-five".