1213524342 has 40 divisors (see below), whose sum is σ = 2721411000. Its totient is φ = 404178336.

The previous prime is 1213524341. The next prime is 1213524353. The reversal of 1213524342 is 2434253121.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213524341) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 273034 + ... + 277442.

It is an arithmetic number, because the mean of its divisors is an integer number (68035275).

Almost surely, 2^1213524342 is an apocalyptic number.

1213524342 is an abundant number, since it is smaller than the sum of its proper divisors (1507886658).

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

1213524342 is a wasteful number, since it uses less digits than its factorization.

1213524342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6122 (or 6113 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 1213524342 is about 34835.6762816513. The cubic root of 1213524342 is about 1066.6358197894.

Adding to 1213524342 its reverse (2434253121), we get a palindrome (3647777463).

The spelling of 1213524342 in words is "one billion, two hundred thirteen million, five hundred twenty-four thousand, three hundred forty-two".