1213042344 has 128 divisors (see below), whose sum is σ = 3288781440. Its totient is φ = 371474432.

The previous prime is 1213042309. The next prime is 1213042351. The reversal of 1213042344 is 4432403121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 3826474 + ... + 3826790.

It is an arithmetic number, because the mean of its divisors is an integer number (25693605).

Almost surely, 2^1213042344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1213042344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1644390720).

1213042344 is an abundant number, since it is smaller than the sum of its proper divisors (2075739096).

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

1213042344 is a wasteful number, since it uses less digits than its factorization.

1213042344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 535 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1213042344 is about 34828.7574283092. The cubic root of 1213042344 is about 1066.4945825692.

Adding to 1213042344 its reverse (4432403121), we get a palindrome (5645445465).

The spelling of 1213042344 in words is "one billion, two hundred thirteen million, forty-two thousand, three hundred forty-four".