1200131142 has 64 divisors (see below), whose sum is σ = 2785972224. Its totient is φ = 337582080.

The previous prime is 1200131087. The next prime is 1200131159. The reversal of 1200131142 is 2411310021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 907842 + ... + 909162.

It is an arithmetic number, because the mean of its divisors is an integer number (43530816).

Almost surely, 2^1200131142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1200131142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1392986112).

1200131142 is an abundant number, since it is smaller than the sum of its proper divisors (1585841082).

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

1200131142 is a wasteful number, since it uses less digits than its factorization.

1200131142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1200131142 is about 34642.9089713898. The cubic root of 1200131142 is about 1062.6972786531.

Adding to 1200131142 its reverse (2411310021), we get a palindrome (3611441163).

The spelling of 1200131142 in words is "one billion, two hundred million, one hundred thirty-one thousand, one hundred forty-two".