1201423040142 has 64 divisors (see below), whose sum is σ = 2702411873280. Its totient is φ = 353304889344.

The previous prime is 1201423040141. The next prime is 1201423040317. The reversal of 1201423040142 is 2410403241021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201423040141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1908159 + ... + 2458437.

It is an arithmetic number, because the mean of its divisors is an integer number (42225185520).

Almost surely, 2^{1201423040142} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1201423040142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1351205936640).

1201423040142 is an abundant number, since it is smaller than the sum of its proper divisors (1500988833138).

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

1201423040142 is a wasteful number, since it uses less digits than its factorization.

1201423040142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551537.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1201423040142 its reverse (2410403241021), we get a palindrome (3611826281163).

The spelling of 1201423040142 in words is "one trillion, two hundred one billion, four hundred twenty-three million, forty thousand, one hundred forty-two".