1209538342 has 8 divisors (see below), whose sum is σ = 1814494032. Its totient is φ = 604707000.

The previous prime is 1209538331. The next prime is 1209538349. The reversal of 1209538342 is 2438359021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1209538349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 909 + ... + 49192.

It is an arithmetic number, because the mean of its divisors is an integer number (226811754).

Almost surely, 2^1209538342 is an apocalyptic number.

1209538342 is a deficient number, since it is larger than the sum of its proper divisors (604955690).

1209538342 is a wasteful number, since it uses less digits than its factorization.

1209538342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62174.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 1209538342 is about 34778.4177615946. The cubic root of 1209538342 is about 1065.4666978202.

The spelling of 1209538342 in words is "one billion, two hundred nine million, five hundred thirty-eight thousand, three hundred forty-two".