20251342 has 4 divisors (see below), whose sum is σ = 30377016. Its totient is φ = 10125670.

The previous prime is 20251333. The next prime is 20251373. The reversal of 20251342 is 24315202.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5062834 + ... + 5062837.

It is an arithmetic number, because the mean of its divisors is an integer number (7594254).

Almost surely, 2^20251342 is an apocalyptic number.

20251342 is a deficient number, since it is larger than the sum of its proper divisors (10125674).

20251342 is a wasteful number, since it uses less digits than its factorization.

20251342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10125673.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20251342 is about 4500.1491086407. The cubic root of 20251342 is about 272.5741099667.

Adding to 20251342 its reverse (24315202), we get a palindrome (44566544).

The spelling of 20251342 in words is "twenty million, two hundred fifty-one thousand, three hundred forty-two".