20342342 has 8 divisors (see below), whose sum is σ = 30900000. Its totient is φ = 10042344.

The previous prime is 20342317. The next prime is 20342347. The reversal of 20342342 is 24324302.

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 (20342347) 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, 64217 + ... + 64532.

It is an arithmetic number, because the mean of its divisors is an integer number (3862500).

Almost surely, 2^20342342 is an apocalyptic number.

20342342 is a deficient number, since it is larger than the sum of its proper divisors (10557658).

20342342 is a wasteful number, since it uses less digits than its factorization.

20342342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128830.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 20342342 is about 4510.2485519093. The cubic root of 20342342 is about 272.9817732154.

Adding to 20342342 its reverse (24324302), we get a palindrome (44666644).

The spelling of 20342342 in words is "twenty million, three hundred forty-two thousand, three hundred forty-two".