82420205422 has 4 divisors (see below), whose sum is σ = 123630308136. Its totient is φ = 41210102710.

The previous prime is 82420205411. The next prime is 82420205519. The reversal of 82420205422 is 22450202428.

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

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, 20605051354 + ... + 20605051357.

It is an arithmetic number, because the mean of its divisors is an integer number (30907577034).

Almost surely, 2^82420205422 is an apocalyptic number.

82420205422 is a deficient number, since it is larger than the sum of its proper divisors (41210102714).

82420205422 is a wasteful number, since it uses less digits than its factorization.

82420205422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41210102713.

The product of its (nonzero) digits is 20480, while the sum is 31.

The spelling of 82420205422 in words is "eighty-two billion, four hundred twenty million, two hundred five thousand, four hundred twenty-two".