1355111142 has 128 divisors (see below), whose sum is σ = 3456027648. Its totient is φ = 344064000.

The previous prime is 1355111129. The next prime is 1355111227. The reversal of 1355111142 is 2411115531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5272678 + ... + 5272934.

It is an arithmetic number, because the mean of its divisors is an integer number (27000216).

Almost surely, 2^1355111142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1355111142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1728013824).

1355111142 is an abundant number, since it is smaller than the sum of its proper divisors (2100916506).

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

1355111142 is a wasteful number, since it uses less digits than its factorization.

1355111142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494.

The product of its digits is 600, while the sum is 24.

The square root of 1355111142 is about 36811.8342656271. The cubic root of 1355111142 is about 1106.6024788379.

Adding to 1355111142 its reverse (2411115531), we get a palindrome (3766226673).

It can be divided in two parts, 13 and 55111142, that added together give a palindrome (55111155).

The spelling of 1355111142 in words is "one billion, three hundred fifty-five million, one hundred eleven thousand, one hundred forty-two".