850142801 has 4 divisors (see below), whose sum is σ = 879458100. Its totient is φ = 820827504.

The previous prime is 850142771. The next prime is 850142803. The reversal of 850142801 is 108241058.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 672053776 + 178089025 = 25924^2 + 13345^2 .

It is a cyclic number.

It is not a de Polignac number, because 850142801 - 2²² = 845948497 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 29315269 = 850142801 / (8 + 5 + 0 + 1 + 4 + 2 + 8 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (850142803) 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, 14657606 + ... + 14657663.

It is an arithmetic number, because the mean of its divisors is an integer number (219864525).

Almost surely, 2^850142801 is an apocalyptic number.

850142801 is the 13040-th centered decagonal number.

It is an amenable number.

850142801 is a deficient number, since it is larger than the sum of its proper divisors (29315299).

850142801 is a wasteful number, since it uses less digits than its factorization.

850142801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29315298.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 850142801 is about 29157.2083883214. The cubic root of 850142801 is about 947.3212816083.

Adding to 850142801 its reverse (108241058), we get a palindrome (958383859).

The spelling of 850142801 in words is "eight hundred fifty million, one hundred forty-two thousand, eight hundred one".