2011786042 has 12 divisors (see below), whose sum is σ = 3510361530. Its totient is φ = 862193976.

The previous prime is 2011785961. The next prime is 2011786067. The reversal of 2011786042 is 2406871102.

It can be written as a sum of positive squares in only one way, i.e., 1891467081 + 120318961 = 43491^2 + 10969^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2011785995 and 2011786013.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10264117 + ... + 10264312.

Almost surely, 2^2011786042 is an apocalyptic number.

2011786042 is a deficient number, since it is larger than the sum of its proper divisors (1498575488).

2011786042 is a wasteful number, since it uses less digits than its factorization.

2011786042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20528445 (or 20528438 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 2011786042 is about 44852.9379416778. The cubic root of 2011786042 is about 1262.3911179112.

The spelling of 2011786042 in words is "two billion, eleven million, seven hundred eighty-six thousand, forty-two".