121256753 has 2 divisors, whose sum is σ = 121256754. Its totient is φ = 121256752.

The previous prime is 121256747. The next prime is 121256761. The reversal of 121256753 is 357652121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71031184 + 50225569 = 8428^2 + 7087^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121256753 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121256783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60628376 + 60628377.

It is an arithmetic number, because the mean of its divisors is an integer number (60628377).

Almost surely, 2^121256753 is an apocalyptic number.

It is an amenable number.

121256753 is a deficient number, since it is larger than the sum of its proper divisors (1).

121256753 is an equidigital number, since it uses as much as digits as its factorization.

121256753 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 32.

The square root of 121256753 is about 11011.6644064374. The cubic root of 121256753 is about 494.9583381594.

The spelling of 121256753 in words is "one hundred twenty-one million, two hundred fifty-six thousand, seven hundred fifty-three".