121254739 has 2 divisors, whose sum is σ = 121254740. Its totient is φ = 121254738.

The previous prime is 121254697. The next prime is 121254743. The reversal of 121254739 is 937452121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121254739 - 2⁷ = 121254611 is a prime.

It is not a weakly prime, because it can be changed into another prime (121254769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60627369 + 60627370.

It is an arithmetic number, because the mean of its divisors is an integer number (60627370).

Almost surely, 2^121254739 is an apocalyptic number.

121254739 is a deficient number, since it is larger than the sum of its proper divisors (1).

121254739 is an equidigital number, since it uses as much as digits as its factorization.

121254739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 34.

The square root of 121254739 is about 11011.5729575751. The cubic root of 121254739 is about 494.9555978265.

The spelling of 121254739 in words is "one hundred twenty-one million, two hundred fifty-four thousand, seven hundred thirty-nine".