1201442142 has 16 divisors (see below), whose sum is σ = 2404982160. Its totient is φ = 400131072.

The previous prime is 1201442141. The next prime is 1201442171. The reversal of 1201442142 is 2412441021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201442141) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 79917 + ... + 93752.

It is an arithmetic number, because the mean of its divisors is an integer number (150311385).

Almost surely, 2^1201442142 is an apocalyptic number.

1201442142 is an abundant number, since it is smaller than the sum of its proper divisors (1203540018).

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

1201442142 is a wasteful number, since it uses less digits than its factorization.

1201442142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174827.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1201442142 is about 34661.8254279834. The cubic root of 1201442142 is about 1063.0840944743.

Adding to 1201442142 its reverse (2412441021), we get a palindrome (3613883163).

The spelling of 1201442142 in words is "one billion, two hundred one million, four hundred forty-two thousand, one hundred forty-two".