742186121 has 2 divisors, whose sum is σ = 742186122. Its totient is φ = 742186120.

The previous prime is 742186079. The next prime is 742186127. The reversal of 742186121 is 121681247.

It is a happy number.

742186121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 741745225 + 440896 = 27235^2 + 664^2 .

It is a cyclic number.

It is not a de Polignac number, because 742186121 - 2¹⁸ = 741923977 is a prime.

It is not a weakly prime, because it can be changed into another prime (742186127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371093060 + 371093061.

It is an arithmetic number, because the mean of its divisors is an integer number (371093061).

Almost surely, 2^742186121 is an apocalyptic number.

It is an amenable number.

742186121 is a deficient number, since it is larger than the sum of its proper divisors (1).

742186121 is an equidigital number, since it uses as much as digits as its factorization.

742186121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 32.

The square root of 742186121 is about 27243.0930879737. The cubic root of 742186121 is about 905.3939946825.

The spelling of 742186121 in words is "seven hundred forty-two million, one hundred eighty-six thousand, one hundred twenty-one".