155442144 has 192 divisors, whose sum is σ = 489404160. Its totient is φ = 42831360.

The previous prime is 155442139. The next prime is 155442187. The reversal of 155442144 is 441244551.

155442144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 2319999 + ... + 2320065.

It is an arithmetic number, because the mean of its divisors is an integer number (2548980).

Almost surely, 2^155442144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155442144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244702080).

155442144 is an abundant number, since it is smaller than the sum of its proper divisors (333962016).

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

155442144 is a wasteful number, since it uses less digits than its factorization.

155442144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 96 counting only the distinct ones).

The product of its digits is 12800, while the sum is 30.

The square root of 155442144 is about 12467.6438832684. The cubic root of 155442144 is about 537.6788158609.

Adding to 155442144 its reverse (441244551), we get a palindrome (596686695).

The spelling of 155442144 in words is "one hundred fifty-five million, four hundred forty-two thousand, one hundred forty-four".