180278142 has 24 divisors (see below), whose sum is σ = 396315528. Its totient is φ = 54629520.

The previous prime is 180278141. The next prime is 180278167. The reversal of 180278142 is 241872081.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (180278141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123433 + ... + 124884.

It is an arithmetic number, because the mean of its divisors is an integer number (16513147).

Almost surely, 2^180278142 is an apocalyptic number.

180278142 is an abundant number, since it is smaller than the sum of its proper divisors (216037386).

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

180278142 is a wasteful number, since it uses less digits than its factorization.

180278142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248344 (or 248333 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 180278142 is about 13426.7696040410. The cubic root of 180278142 is about 564.9122917080.

The spelling of 180278142 in words is "one hundred eighty million, two hundred seventy-eight thousand, one hundred forty-two".