180120742 has 4 divisors (see below), whose sum is σ = 270181116. Its totient is φ = 90060370.

The previous prime is 180120713. The next prime is 180120767. The reversal of 180120742 is 247021081.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 247021081 = 23 ⋅10740047.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45030184 + ... + 45030187.

It is an arithmetic number, because the mean of its divisors is an integer number (67545279).

Almost surely, 2^180120742 is an apocalyptic number.

180120742 is a deficient number, since it is larger than the sum of its proper divisors (90060374).

180120742 is an equidigital number, since it uses as much as digits as its factorization.

180120742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90060373.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 180120742 is about 13420.9068993120. The cubic root of 180120742 is about 564.7478364131.

The spelling of 180120742 in words is "one hundred eighty million, one hundred twenty thousand, seven hundred forty-two".