142630849 has 2 divisors, whose sum is σ = 142630850. Its totient is φ = 142630848.

The previous prime is 142630801. The next prime is 142630861. The reversal of 142630849 is 948036241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142444225 + 186624 = 11935^2 + 432^2 .

It is a cyclic number.

It is not a de Polignac number, because 142630849 - 2¹³ = 142622657 is a prime.

It is not a weakly prime, because it can be changed into another prime (142630249) 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, 71315424 + 71315425.

It is an arithmetic number, because the mean of its divisors is an integer number (71315425).

Almost surely, 2^142630849 is an apocalyptic number.

It is an amenable number.

142630849 is a deficient number, since it is larger than the sum of its proper divisors (1).

142630849 is an equidigital number, since it uses as much as digits as its factorization.

142630849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 142630849 is about 11942.8157902565. The cubic root of 142630849 is about 522.4817865647.

The spelling of 142630849 in words is "one hundred forty-two million, six hundred thirty thousand, eight hundred forty-nine".