20422342 has 4 divisors (see below), whose sum is σ = 30633516. Its totient is φ = 10211170.

The previous prime is 20422313. The next prime is 20422343. The reversal of 20422342 is 24322402.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20422343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105584 + ... + 5105587.

It is an arithmetic number, because the mean of its divisors is an integer number (7658379).

Almost surely, 2^20422342 is an apocalyptic number.

20422342 is a deficient number, since it is larger than the sum of its proper divisors (10211174).

20422342 is a wasteful number, since it uses less digits than its factorization.

20422342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10211173.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 20422342 is about 4519.1085404093. The cubic root of 20422342 is about 273.3391554712.

Adding to 20422342 its reverse (24322402), we get a palindrome (44744744).

The spelling of 20422342 in words is "twenty million, four hundred twenty-two thousand, three hundred forty-two".