121654610 has 96 divisors (see below), whose sum is σ = 281304576. Its totient is φ = 37065600.

The previous prime is 121654597. The next prime is 121654619. The reversal of 121654610 is 16456121.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121654610.

It is not an unprimeable number, because it can be changed into a prime (121654619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 448775 + ... + 449045.

It is an arithmetic number, because the mean of its divisors is an integer number (2930256).

Almost surely, 2^121654610 is an apocalyptic number.

121654610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121654610 is an abundant number, since it is smaller than the sum of its proper divisors (159649966).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121654610 is a wasteful number, since it uses less digits than its factorization.

121654610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 121654610 is about 11029.7148648548. The cubic root of 121654610 is about 495.4990851043.

The spelling of 121654610 in words is "one hundred twenty-one million, six hundred fifty-four thousand, six hundred ten".