142630811 has 4 divisors (see below), whose sum is σ = 142658232. Its totient is φ = 142603392.

The previous prime is 142630801. The next prime is 142630849. The reversal of 142630811 is 118036241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 118036241 = 263 ⋅448807.

It is a cyclic number.

It is not a de Polignac number, because 142630811 - 2¹⁴ = 142614427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142630801) 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 in 3 ways as a sum of consecutive naturals, for example, 3245 + ... + 17198.

It is an arithmetic number, because the mean of its divisors is an integer number (35664558).

Almost surely, 2^142630811 is an apocalyptic number.

142630811 is a deficient number, since it is larger than the sum of its proper divisors (27421).

142630811 is an equidigital number, since it uses as much as digits as its factorization.

142630811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27420.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 142630811 is about 11942.8141993418. The cubic root of 142630811 is about 522.4817401645.

The spelling of 142630811 in words is "one hundred forty-two million, six hundred thirty thousand, eight hundred eleven".