180515021242 has 8 divisors (see below), whose sum is σ = 274034851776. Its totient is φ = 89170070652.

The previous prime is 180515021227. The next prime is 180515021273. The reversal of 180515021242 is 242120515081.

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

It is a super-2 number, since 2×180515021242² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 543719778 + ... + 543720109.

It is an arithmetic number, because the mean of its divisors is an integer number (34254356472).

Almost surely, 2^180515021242 is an apocalyptic number.

180515021242 is a deficient number, since it is larger than the sum of its proper divisors (93519830534).

180515021242 is a wasteful number, since it uses less digits than its factorization.

180515021242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087439972.

The product of its (nonzero) digits is 6400, while the sum is 31.

The spelling of 180515021242 in words is "one hundred eighty billion, five hundred fifteen million, twenty-one thousand, two hundred forty-two".