20412001242 has 16 divisors (see below), whose sum is σ = 45360002880. Its totient is φ = 6804000396.

The previous prime is 20412001241. The next prime is 20412001261. The reversal of 20412001242 is 24210021402.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20412001241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188999958 + ... + 189000065.

It is an arithmetic number, because the mean of its divisors is an integer number (2835000180).

Almost surely, 2^20412001242 is an apocalyptic number.

20412001242 is an abundant number, since it is smaller than the sum of its proper divisors (24948001638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20412001242 is a wasteful number, since it uses less digits than its factorization.

20412001242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378000034 (or 378000028 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20412001242 its reverse (24210021402), we get a palindrome (44622022644).

The spelling of 20412001242 in words is "twenty billion, four hundred twelve million, one thousand, two hundred forty-two".