142499953 has 2 divisors, whose sum is σ = 142499954. Its totient is φ = 142499952.

The previous prime is 142499923. The next prime is 142499957. The reversal of 142499953 is 359994241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81144064 + 61355889 = 9008^2 + 7833^2 .

It is an emirp because it is prime and its reverse (359994241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142499953 - 2⁵ = 142499921 is a prime.

It is not a weakly prime, because it can be changed into another prime (142499957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71249976 + 71249977.

It is an arithmetic number, because the mean of its divisors is an integer number (71249977).

Almost surely, 2^142499953 is an apocalyptic number.

It is an amenable number.

142499953 is a deficient number, since it is larger than the sum of its proper divisors (1).

142499953 is an equidigital number, since it uses as much as digits as its factorization.

142499953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 46.

The square root of 142499953 is about 11937.3344176998. The cubic root of 142499953 is about 522.3219059863.

The spelling of 142499953 in words is "one hundred forty-two million, four hundred ninety-nine thousand, nine hundred fifty-three".