1201323542 has 8 divisors (see below), whose sum is σ = 1807855896. Its totient is φ = 598704912.

The previous prime is 1201323527. The next prime is 1201323559. The reversal of 1201323542 is 2453231021.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 977663 + ... + 978890.

It is an arithmetic number, because the mean of its divisors is an integer number (225981987).

Almost surely, 2^1201323542 is an apocalyptic number.

1201323542 is a deficient number, since it is larger than the sum of its proper divisors (606532354).

1201323542 is a wasteful number, since it uses less digits than its factorization.

1201323542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956862.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1201323542 is about 34660.1145699203. The cubic root of 1201323542 is about 1063.0491126476.

Adding to 1201323542 its reverse (2453231021), we get a palindrome (3654554563).

The spelling of 1201323542 in words is "one billion, two hundred one million, three hundred twenty-three thousand, five hundred forty-two".