142489933 has 2 divisors, whose sum is σ = 142489934. Its totient is φ = 142489932.

The previous prime is 142489931. The next prime is 142489951. The reversal of 142489933 is 339984241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135536164 + 6953769 = 11642^2 + 2637^2 .

It is a cyclic number.

It is not a de Polignac number, because 142489933 - 2¹ = 142489931 is a prime.

Together with 142489931, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 142489933.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142489931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71244966 + 71244967.

It is an arithmetic number, because the mean of its divisors is an integer number (71244967).

Almost surely, 2^142489933 is an apocalyptic number.

It is an amenable number.

142489933 is a deficient number, since it is larger than the sum of its proper divisors (1).

142489933 is an equidigital number, since it uses as much as digits as its factorization.

142489933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 43.

The square root of 142489933 is about 11936.9147186365. The cubic root of 142489933 is about 522.3096632029.

The spelling of 142489933 in words is "one hundred forty-two million, four hundred eighty-nine thousand, nine hundred thirty-three".