20297424542 has 8 divisors (see below), whose sum is σ = 30448920600. Its totient is φ = 10147784344.

The previous prime is 20297424541. The next prime is 20297424613. The reversal of 20297424542 is 24542479202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20297424542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20297424541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 436292 + ... + 480567.

It is an arithmetic number, because the mean of its divisors is an integer number (3806115075).

Almost surely, 2^20297424542 is an apocalyptic number.

20297424542 is a deficient number, since it is larger than the sum of its proper divisors (10151496058).

20297424542 is a wasteful number, since it uses less digits than its factorization.

20297424542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927930.

The product of its (nonzero) digits is 322560, while the sum is 41.

The spelling of 20297424542 in words is "twenty billion, two hundred ninety-seven million, four hundred twenty-four thousand, five hundred forty-two".