121754057 has 2 divisors, whose sum is σ = 121754058. Its totient is φ = 121754056.

The previous prime is 121754023. The next prime is 121754069. The reversal of 121754057 is 750457121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119596096 + 2157961 = 10936^2 + 1469^2 .

It is an emirp because it is prime and its reverse (750457121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121754057 - 2¹⁴ = 121737673 is a prime.

It is not a weakly prime, because it can be changed into another prime (121754257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60877028 + 60877029.

It is an arithmetic number, because the mean of its divisors is an integer number (60877029).

Almost surely, 2^121754057 is an apocalyptic number.

It is an amenable number.

121754057 is a deficient number, since it is larger than the sum of its proper divisors (1).

121754057 is an equidigital number, since it uses as much as digits as its factorization.

121754057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9800, while the sum is 32.

The square root of 121754057 is about 11034.2220840438. Note that the first 3 decimals coincide. The cubic root of 121754057 is about 495.6340641698.

The spelling of 121754057 in words is "one hundred twenty-one million, seven hundred fifty-four thousand, fifty-seven".