8220405142 has 4 divisors (see below), whose sum is σ = 12330607716. Its totient is φ = 4110202570.

The previous prime is 8220405133. The next prime is 8220405187. The reversal of 8220405142 is 2415040228.

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

It is a self number, because there is not a number n which added to its sum of digits gives 8220405142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2055101284 + ... + 2055101287.

It is an arithmetic number, because the mean of its divisors is an integer number (3082651929).

Almost surely, 2^8220405142 is an apocalyptic number.

8220405142 is a deficient number, since it is larger than the sum of its proper divisors (4110202574).

8220405142 is a wasteful number, since it uses less digits than its factorization.

8220405142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4110202573.

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 8220405142 is about 90666.4499249860. The cubic root of 8220405142 is about 2018.2009553196.

The spelling of 8220405142 in words is "eight billion, two hundred twenty million, four hundred five thousand, one hundred forty-two".