142009741 has 2 divisors, whose sum is σ = 142009742. Its totient is φ = 142009740.

The previous prime is 142009717. The next prime is 142009757. The reversal of 142009741 is 147900241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124411716 + 17598025 = 11154^2 + 4195^2 .

It is an emirp because it is prime and its reverse (147900241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142009741 - 2²³ = 133621133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142009841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71004870 + 71004871.

It is an arithmetic number, because the mean of its divisors is an integer number (71004871).

Almost surely, 2^142009741 is an apocalyptic number.

It is an amenable number.

142009741 is a deficient number, since it is larger than the sum of its proper divisors (1).

142009741 is an equidigital number, since it uses as much as digits as its factorization.

142009741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 142009741 is about 11916.7840040843. The cubic root of 142009741 is about 521.7222738865.

Adding to 142009741 its reverse (147900241), we get a palindrome (289909982).

The spelling of 142009741 in words is "one hundred forty-two million, nine thousand, seven hundred forty-one".