1801060042 has 4 divisors (see below), whose sum is σ = 2701590066. Its totient is φ = 900530020.

The previous prime is 1801060021. The next prime is 1801060043. The reversal of 1801060042 is 2400601081.

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., 1769800761 + 31259281 = 42069^2 + 5591^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1801059995 and 1801060022.

It is not an unprimeable number, because it can be changed into a prime (1801060043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450265009 + ... + 450265012.

Almost surely, 2^1801060042 is an apocalyptic number.

1801060042 is a deficient number, since it is larger than the sum of its proper divisors (900530024).

1801060042 is an equidigital number, since it uses as much as digits as its factorization.

1801060042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900530023.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1801060042 is about 42438.8977472318. The cubic root of 1801060042 is about 1216.6791444603.

The spelling of 1801060042 in words is "one billion, eight hundred one million, sixty thousand, forty-two".