1245543342 has 16 divisors (see below), whose sum is σ = 2492637312. Its totient is φ = 414922680.

The previous prime is 1245543331. The next prime is 1245543349. The reversal of 1245543342 is 2433455421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245543349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54034 + ... + 73557.

It is an arithmetic number, because the mean of its divisors is an integer number (155789832).

Almost surely, 2^1245543342 is an apocalyptic number.

1245543342 is an abundant number, since it is smaller than the sum of its proper divisors (1247093970).

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

1245543342 is a wasteful number, since it uses less digits than its factorization.

1245543342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129223.

The product of its digits is 57600, while the sum is 33.

The square root of 1245543342 is about 35292.2561194379. The cubic root of 1245543342 is about 1075.9356100595.

Adding to 1245543342 its reverse (2433455421), we get a palindrome (3678998763).

The spelling of 1245543342 in words is "one billion, two hundred forty-five million, five hundred forty-three thousand, three hundred forty-two".