20042254624534 has 4 divisors (see below), whose sum is σ = 30063381936804. Its totient is φ = 10021127312266.

The previous prime is 20042254624529. The next prime is 20042254624559. The reversal of 20042254624534 is 43542645224002.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 5010563656132 + ... + 5010563656135.

It is an arithmetic number, because the mean of its divisors is an integer number (7515845484201).

Almost surely, 2^{20042254624534} is an apocalyptic number.

20042254624534 is a deficient number, since it is larger than the sum of its proper divisors (10021127312270).

20042254624534 is a wasteful number, since it uses less digits than its factorization.

20042254624534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10021127312269.

The product of its (nonzero) digits is 1843200, while the sum is 43.

Adding to 20042254624534 its reverse (43542645224002), we get a palindrome (63584899848536).

The spelling of 20042254624534 in words is "twenty trillion, forty-two billion, two hundred fifty-four million, six hundred twenty-four thousand, five hundred thirty-four".