20110001042 has 4 divisors (see below), whose sum is σ = 30165001566. Its totient is φ = 10055000520.

The previous prime is 20110001039. The next prime is 20110001053. The reversal of 20110001042 is 24010001102.

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., 19256835361 + 853165681 = 138769^2 + 29209^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5027500259 + ... + 5027500262.

Almost surely, 2^20110001042 is an apocalyptic number.

20110001042 is a deficient number, since it is larger than the sum of its proper divisors (10055000524).

20110001042 is a wasteful number, since it uses less digits than its factorization.

20110001042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10055000523.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20110001042 its reverse (24010001102), we get a palindrome (44120002144).

The spelling of 20110001042 in words is "twenty billion, one hundred ten million, one thousand, forty-two".