20342003 has 4 divisors (see below), whose sum is σ = 22191288. Its totient is φ = 18492720.

The previous prime is 20341999. The next prime is 20342009. The reversal of 20342003 is 30024302.

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

It is a cyclic number.

It is not a de Polignac number, because 20342003 - 2² = 20341999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20342009) 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, 924626 + ... + 924647.

It is an arithmetic number, because the mean of its divisors is an integer number (5547822).

Almost surely, 2^20342003 is an apocalyptic number.

20342003 is a deficient number, since it is larger than the sum of its proper divisors (1849285).

20342003 is a wasteful number, since it uses less digits than its factorization.

20342003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849284.

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 20342003 is about 4510.2109706753. The cubic root of 20342003 is about 272.9802568162.

Adding to 20342003 its reverse (30024302), we get a palindrome (50366305).

The spelling of 20342003 in words is "twenty million, three hundred forty-two thousand, three".