155021305142 has 8 divisors (see below), whose sum is σ = 253671226632. Its totient is φ = 70464229600.

The previous prime is 155021305099. The next prime is 155021305147. The reversal of 155021305142 is 241503120551.

155021305142 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155021305147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3523211459 + ... + 3523211502.

It is an arithmetic number, because the mean of its divisors is an integer number (31708903329).

Almost surely, 2^155021305142 is an apocalyptic number.

155021305142 is a deficient number, since it is larger than the sum of its proper divisors (98649921490).

155021305142 is a wasteful number, since it uses less digits than its factorization.

155021305142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7046422974.

The product of its (nonzero) digits is 6000, while the sum is 29.

Adding to 155021305142 its reverse (241503120551), we get a palindrome (396524425693).

The spelling of 155021305142 in words is "one hundred fifty-five billion, twenty-one million, three hundred five thousand, one hundred forty-two".