155223035442 has 12 divisors (see below), whose sum is σ = 336316576830. Its totient is φ = 51741011808.

The previous prime is 155223035431. The next prime is 155223035449. The reversal of 155223035442 is 244530322551.

155223035442 is a `hidden beast` number, since 1 + 552 + 2 + 30 + 35 + 4 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 135977300001 + 19245735441 = 368751^2 + 138729^2 .

It is a junction number, because it is equal to n+sod(n) for n = 155223035397 and 155223035406.

It is not an unprimeable number, because it can be changed into a prime (155223035449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4311750967 + ... + 4311751002.

Almost surely, 2^155223035442 is an apocalyptic number.

155223035442 is an abundant number, since it is smaller than the sum of its proper divisors (181093541388).

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

155223035442 is a wasteful number, since it uses less digits than its factorization.

155223035442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8623501977 (or 8623501974 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 155223035442 its reverse (244530322551), we get a palindrome (399753357993).

The spelling of 155223035442 in words is "one hundred fifty-five billion, two hundred twenty-three million, thirty-five thousand, four hundred forty-two".