142191733 has 2 divisors, whose sum is σ = 142191734. Its totient is φ = 142191732.

The previous prime is 142191719. The next prime is 142191737. The reversal of 142191733 is 337191241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140138244 + 2053489 = 11838^2 + 1433^2 .

It is an emirp because it is prime and its reverse (337191241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142191733 - 2¹³ = 142183541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142191695 and 142191704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142191737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71095866 + 71095867.

It is an arithmetic number, because the mean of its divisors is an integer number (71095867).

Almost surely, 2^142191733 is an apocalyptic number.

It is an amenable number.

142191733 is a deficient number, since it is larger than the sum of its proper divisors (1).

142191733 is an equidigital number, since it uses as much as digits as its factorization.

142191733 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 31.

The square root of 142191733 is about 11924.4175119794. The cubic root of 142191733 is about 521.9450490934.

The spelling of 142191733 in words is "one hundred forty-two million, one hundred ninety-one thousand, seven hundred thirty-three".