20112410042 has 4 divisors (see below), whose sum is σ = 30168615066. Its totient is φ = 10056205020.

The previous prime is 20112410041. The next prime is 20112410047. The reversal of 20112410042 is 24001421102.

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

It can be written as a sum of positive squares in only one way, i.e., 19793394721 + 319015321 = 140689^2 + 17861^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20112410042.

It is not an unprimeable number, because it can be changed into a prime (20112410041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5028102509 + ... + 5028102512.

Almost surely, 2^20112410042 is an apocalyptic number.

20112410042 is a deficient number, since it is larger than the sum of its proper divisors (10056205024).

20112410042 is a wasteful number, since it uses less digits than its factorization.

20112410042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10056205023.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20112410042 its reverse (24001421102), we get a palindrome (44113831144).

The spelling of 20112410042 in words is "twenty billion, one hundred twelve million, four hundred ten thousand, forty-two".