120142517 has 4 divisors (see below), whose sum is σ = 131064576. Its totient is φ = 109220460.

The previous prime is 120142513. The next prime is 120142537. The reversal of 120142517 is 715241021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120142517 - 2² = 120142513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120142492 and 120142501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120142513) 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, 5461013 + ... + 5461034.

It is an arithmetic number, because the mean of its divisors is an integer number (32766144).

Almost surely, 2^120142517 is an apocalyptic number.

It is an amenable number.

120142517 is a deficient number, since it is larger than the sum of its proper divisors (10922059).

120142517 is a wasteful number, since it uses less digits than its factorization.

120142517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10922058.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 120142517 is about 10960.9542011633. The cubic root of 120142517 is about 493.4376026966.

Adding to 120142517 its reverse (715241021), we get a palindrome (835383538).

The spelling of 120142517 in words is "one hundred twenty million, one hundred forty-two thousand, five hundred seventeen".