155442042432 has 168 divisors, whose sum is σ = 469736180160. Its totient is φ = 49009536000.

The previous prime is 155442042403. The next prime is 155442042449. The reversal of 155442042432 is 234240244551.

155442042432 is a `hidden beast` number, since 1 + 554 + 4 + 20 + 42 + 43 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7135557 + ... + 7157307.

Almost surely, 2^155442042432 is an apocalyptic number.

155442042432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155442042432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234868090080).

155442042432 is an abundant number, since it is smaller than the sum of its proper divisors (314294137728).

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

155442042432 is a wasteful number, since it uses less digits than its factorization.

155442042432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22441 (or 22428 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

Adding to 155442042432 its reverse (234240244551), we get a palindrome (389682286983).

The spelling of 155442042432 in words is "one hundred fifty-five billion, four hundred forty-two million, forty-two thousand, four hundred thirty-two".