121450783 has 4 divisors (see below), whose sum is σ = 122653368. Its totient is φ = 120248200.

The previous prime is 121450781. The next prime is 121450799. The reversal of 121450783 is 387054121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 387054121 = 103 ⋅3757807.

It is a cyclic number.

It is not a de Polignac number, because 121450783 - 2¹ = 121450781 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121450781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601141 + ... + 601342.

It is an arithmetic number, because the mean of its divisors is an integer number (30663342).

Almost surely, 2^121450783 is an apocalyptic number.

121450783 is a deficient number, since it is larger than the sum of its proper divisors (1202585).

121450783 is a wasteful number, since it uses less digits than its factorization.

121450783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202584.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 121450783 is about 11020.4710879345. The cubic root of 121450783 is about 495.2222013665. Note that the first 4 decimals are identical.

The spelling of 121450783 in words is "one hundred twenty-one million, four hundred fifty thousand, seven hundred eighty-three".