142499849 has 2 divisors, whose sum is σ = 142499850. Its totient is φ = 142499848.

The previous prime is 142499837. The next prime is 142499873. The reversal of 142499849 is 948994241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142086400 + 413449 = 11920^2 + 643^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142499849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142499797 and 142499806.

It is not a weakly prime, because it can be changed into another prime (142492849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71249924 + 71249925.

It is an arithmetic number, because the mean of its divisors is an integer number (71249925).

Almost surely, 2^142499849 is an apocalyptic number.

It is an amenable number.

142499849 is a deficient number, since it is larger than the sum of its proper divisors (1).

142499849 is an equidigital number, since it uses as much as digits as its factorization.

142499849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 50.

The square root of 142499849 is about 11937.3300616176. The cubic root of 142499849 is about 522.3217789184.

The spelling of 142499849 in words is "one hundred forty-two million, four hundred ninety-nine thousand, eight hundred forty-nine".