155304143442 has 96 divisors (see below), whose sum is σ = 390167331840. Its totient is φ = 43726525920.

The previous prime is 155304143429. The next prime is 155304143443. The reversal of 155304143442 is 244341403551.

155304143442 is a `hidden beast` number, since 1 + 5 + 5 + 304 + 1 + 4 + 344 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 155304143397 and 155304143406.

It is not an unprimeable number, because it can be changed into a prime (155304143443) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33446773 + ... + 33451415.

It is an arithmetic number, because the mean of its divisors is an integer number (4064243040).

Almost surely, 2^155304143442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155304143442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195083665920).

155304143442 is an abundant number, since it is smaller than the sum of its proper divisors (234863188398).

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

155304143442 is a wasteful number, since it uses less digits than its factorization.

155304143442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8468 (or 8465 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 155304143442 its reverse (244341403551), we get a palindrome (399645546993).

The spelling of 155304143442 in words is "one hundred fifty-five billion, three hundred four million, one hundred forty-three thousand, four hundred forty-two".