142537849 has 2 divisors, whose sum is σ = 142537850. Its totient is φ = 142537848.

The previous prime is 142537841. The next prime is 142537859. The reversal of 142537849 is 948735241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130759225 + 11778624 = 11435^2 + 3432^2 .

It is a cyclic number.

It is not a de Polignac number, because 142537849 - 2³ = 142537841 is a prime.

It is not a weakly prime, because it can be changed into another prime (142537841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71268924 + 71268925.

It is an arithmetic number, because the mean of its divisors is an integer number (71268925).

Almost surely, 2^142537849 is an apocalyptic number.

It is an amenable number.

142537849 is a deficient number, since it is larger than the sum of its proper divisors (1).

142537849 is an equidigital number, since it uses as much as digits as its factorization.

142537849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 43.

The square root of 142537849 is about 11938.9216012168. The cubic root of 142537849 is about 522.3682034438.

The spelling of 142537849 in words is "one hundred forty-two million, five hundred thirty-seven thousand, eight hundred forty-nine".