20420105374 has 8 divisors (see below), whose sum is σ = 30710977560. Its totient is φ = 10183112856.

The previous prime is 20420105359. The next prime is 20420105389. The reversal of 20420105374 is 47350102402.

It is an interprime number because it is at equal distance from previous prime (20420105359) and next prime (20420105389).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13468969 + ... + 13470484.

It is an arithmetic number, because the mean of its divisors is an integer number (3838872195).

Almost surely, 2^20420105374 is an apocalyptic number.

20420105374 is a deficient number, since it is larger than the sum of its proper divisors (10290872186).

20420105374 is a wasteful number, since it uses less digits than its factorization.

20420105374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26939834.

The product of its (nonzero) digits is 6720, while the sum is 28.

Adding to 20420105374 its reverse (47350102402), we get a palindrome (67770207776).

The spelling of 20420105374 in words is "twenty billion, four hundred twenty million, one hundred five thousand, three hundred seventy-four".