1311200042 has 16 divisors (see below), whose sum is σ = 1986861312. Its totient is φ = 648923520.

The previous prime is 1311200041. The next prime is 1311200047. The reversal of 1311200042 is 2400021131.

It is not an unprimeable number, because it can be changed into a prime (1311200041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388442 + ... + 391802.

It is an arithmetic number, because the mean of its divisors is an integer number (124178832).

Almost surely, 2^1311200042 is an apocalyptic number.

1311200042 is a deficient number, since it is larger than the sum of its proper divisors (675661270).

1311200042 is a wasteful number, since it uses less digits than its factorization.

1311200042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5293.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1311200042 is about 36210.4962959637. The cubic root of 1311200042 is about 1094.5181931261.

Adding to 1311200042 its reverse (2400021131), we get a palindrome (3711221173).

The spelling of 1311200042 in words is "one billion, three hundred eleven million, two hundred thousand, forty-two".