142780933 has 2 divisors, whose sum is σ = 142780934. Its totient is φ = 142780932.

The previous prime is 142780873. The next prime is 142781021. The reversal of 142780933 is 339087241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79530724 + 63250209 = 8918^2 + 7953^2 .

It is a cyclic number.

It is not a de Polignac number, because 142780933 - 2¹⁷ = 142649861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142780892 and 142780901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142780633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71390466 + 71390467.

It is an arithmetic number, because the mean of its divisors is an integer number (71390467).

Almost surely, 2^142780933 is an apocalyptic number.

It is an amenable number.

142780933 is a deficient number, since it is larger than the sum of its proper divisors (1).

142780933 is an equidigital number, since it uses as much as digits as its factorization.

142780933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 142780933 is about 11949.0975809891. The cubic root of 142780933 is about 522.6649836512.

The spelling of 142780933 in words is "one hundred forty-two million, seven hundred eighty thousand, nine hundred thirty-three".