1211342104 has 32 divisors (see below), whose sum is σ = 2708593920. Its totient is φ = 496574496.

The previous prime is 1211342101. The next prime is 1211342107. The reversal of 1211342104 is 4012431121.

It is an interprime number because it is at equal distance from previous prime (1211342101) and next prime (1211342107).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211342101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 468954 + ... + 471529.

It is an arithmetic number, because the mean of its divisors is an integer number (84643560).

Almost surely, 2^1211342104 is an apocalyptic number.

1211342104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1211342104 is an abundant number, since it is smaller than the sum of its proper divisors (1497251816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211342104 is a wasteful number, since it uses less digits than its factorization.

1211342104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940519 (or 940515 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1211342104 is about 34804.3403040483. The cubic root of 1211342104 is about 1065.9960716391.

Adding to 1211342104 its reverse (4012431121), we get a palindrome (5223773225).

The spelling of 1211342104 in words is "one billion, two hundred eleven million, three hundred forty-two thousand, one hundred four".