121604783 has 2 divisors, whose sum is σ = 121604784. Its totient is φ = 121604782.

The previous prime is 121604773. The next prime is 121604789. The reversal of 121604783 is 387406121.

It is a strong prime.

It is an emirp because it is prime and its reverse (387406121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121604783 - 2⁴ = 121604767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121604789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60802391 + 60802392.

It is an arithmetic number, because the mean of its divisors is an integer number (60802392).

Almost surely, 2^121604783 is an apocalyptic number.

121604783 is a deficient number, since it is larger than the sum of its proper divisors (1).

121604783 is an equidigital number, since it uses as much as digits as its factorization.

121604783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 121604783 is about 11027.4558715961. The cubic root of 121604783 is about 495.4314274288.

The spelling of 121604783 in words is "one hundred twenty-one million, six hundred four thousand, seven hundred eighty-three".