120342531 has 8 divisors (see below), whose sum is σ = 160663744. Its totient is φ = 80124840.

The previous prime is 120342479. The next prime is 120342539. The reversal of 120342531 is 135243021.

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

It is not a de Polignac number, because 120342531 - 2¹¹ = 120340483 is a prime.

It is a super-2 number, since 2×120342531² = 28964649534971922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120342498 and 120342507.

It is not an unprimeable number, because it can be changed into a prime (120342539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23125 + ... + 27846.

It is an arithmetic number, because the mean of its divisors is an integer number (20082968).

Almost surely, 2^120342531 is an apocalyptic number.

120342531 is a deficient number, since it is larger than the sum of its proper divisors (40321213).

120342531 is an equidigital number, since it uses as much as digits as its factorization.

120342531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51761.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 120342531 is about 10970.0743388548. The cubic root of 120342531 is about 493.7112768649.

Adding to 120342531 its reverse (135243021), we get a palindrome (255585552).

It can be divided in two parts, 1203 and 42531, that added together give a palindrome (43734).

The spelling of 120342531 in words is "one hundred twenty million, three hundred forty-two thousand, five hundred thirty-one".