1206040042 has 8 divisors (see below), whose sum is σ = 1813090500. Its totient is φ = 601676544.

The previous prime is 1206040013. The next prime is 1206040117. The reversal of 1206040042 is 2400406021.

It can be written as a sum of positive squares in 2 ways, for example, as 1151855721 + 54184321 = 33939^2 + 7361^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670617 + ... + 672412.

Almost surely, 2^1206040042 is an apocalyptic number.

1206040042 is a deficient number, since it is larger than the sum of its proper divisors (607050458).

1206040042 is a wasteful number, since it uses less digits than its factorization.

1206040042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343480.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1206040042 is about 34728.0872205769. The cubic root of 1206040042 is about 1064.4385034900.

Adding to 1206040042 its reverse (2400406021), we get a palindrome (3606446063).

The spelling of 1206040042 in words is "one billion, two hundred six million, forty thousand, forty-two".