20500342 has 8 divisors (see below), whose sum is σ = 31140000. Its totient is φ = 10120344.

The previous prime is 20500339. The next prime is 20500343. The reversal of 20500342 is 24300502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20500343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64717 + ... + 65032.

It is an arithmetic number, because the mean of its divisors is an integer number (3892500).

Almost surely, 2^20500342 is an apocalyptic number.

20500342 is a deficient number, since it is larger than the sum of its proper divisors (10639658).

20500342 is a wasteful number, since it uses less digits than its factorization.

20500342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129830.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 20500342 is about 4527.7303364931. The cubic root of 20500342 is about 273.6867056881.

Adding to 20500342 its reverse (24300502), we get a palindrome (44800844).

The spelling of 20500342 in words is "twenty million, five hundred thousand, three hundred forty-two".