20342254 has 4 divisors (see below), whose sum is σ = 30513384. Its totient is φ = 10171126.

The previous prime is 20342249. The next prime is 20342269. The reversal of 20342254 is 45224302.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 5085562 + ... + 5085565.

It is an arithmetic number, because the mean of its divisors is an integer number (7628346).

Almost surely, 2^20342254 is an apocalyptic number.

20342254 is a deficient number, since it is larger than the sum of its proper divisors (10171130).

20342254 is a wasteful number, since it uses less digits than its factorization.

20342254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10171129.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 20342254 is about 4510.2387963388. The cubic root of 20342254 is about 272.9813795795.

Adding to 20342254 its reverse (45224302), we get a palindrome (65566556).

The spelling of 20342254 in words is "twenty million, three hundred forty-two thousand, two hundred fifty-four".