121497845 has 16 divisors (see below), whose sum is σ = 173871360. Its totient is φ = 79689984.

The previous prime is 121497841. The next prime is 121497851. The reversal of 121497845 is 548794121.

It is a cyclic number.

It is not a de Polignac number, because 121497845 - 2² = 121497841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121497841) 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, 74660 + ... + 76269.

It is an arithmetic number, because the mean of its divisors is an integer number (10866960).

Almost surely, 2^121497845 is an apocalyptic number.

It is an amenable number.

121497845 is a deficient number, since it is larger than the sum of its proper divisors (52373515).

121497845 is a wasteful number, since it uses less digits than its factorization.

121497845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150964.

The product of its digits is 80640, while the sum is 41.

The square root of 121497845 is about 11022.6060893057. The cubic root of 121497845 is about 495.2861590645.

The spelling of 121497845 in words is "one hundred twenty-one million, four hundred ninety-seven thousand, eight hundred forty-five".