1231130141442 has 128 divisors (see below), whose sum is σ = 2963921241600. Its totient is φ = 377627298048.

The previous prime is 1231130141407. The next prime is 1231130141447. The reversal of 1231130141442 is 2441410311321.

It is a happy number.

1231130141442 is a `hidden beast` number, since 1 + 2 + 311 + 301 + 4 + 1 + 4 + 42 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (1231130141447) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9915288 + ... + 10038684.

It is an arithmetic number, because the mean of its divisors is an integer number (23155634700).

Almost surely, 2^{1231130141442} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231130141442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1481960620800).

1231130141442 is an abundant number, since it is smaller than the sum of its proper divisors (1732791100158).

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

1231130141442 is a wasteful number, since it uses less digits than its factorization.

1231130141442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123737 (or 123731 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 1231130141442 its reverse (2441410311321), we get a palindrome (3672540452763).

The spelling of 1231130141442 in words is "one trillion, two hundred thirty-one billion, one hundred thirty million, one hundred forty-one thousand, four hundred forty-two".