121445678 has 16 divisors (see below), whose sum is σ = 188725680. Its totient is φ = 58543296.

The previous prime is 121445651. The next prime is 121445719. The reversal of 121445678 is 876544121.

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, 58901 + ... + 60927.

It is an arithmetic number, because the mean of its divisors is an integer number (11795355).

Almost surely, 2^121445678 is an apocalyptic number.

121445678 is a deficient number, since it is larger than the sum of its proper divisors (67280002).

121445678 is a wasteful number, since it uses less digits than its factorization.

121445678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3091.

The product of its digits is 53760, while the sum is 38.

The square root of 121445678 is about 11020.2394710823. The cubic root of 121445678 is about 495.2152626305.

Adding to 121445678 its reverse (876544121), we get a palindrome (997989799).

The spelling of 121445678 in words is "one hundred twenty-one million, four hundred forty-five thousand, six hundred seventy-eight".