300142523 has 4 divisors (see below), whose sum is σ = 300400008. Its totient is φ = 299885040.

The previous prime is 300142511. The next prime is 300142543. The reversal of 300142523 is 325241003.

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: 325241003 = 29 ⋅11215207.

It is a cyclic number.

It is not a de Polignac number, because 300142523 - 2⁶ = 300142459 is a prime.

It is a super-2 number, since 2×300142523² = 180171068225611058, 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 = 300142495 and 300142504.

It is not an unprimeable number, because it can be changed into a prime (300142543) 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 3 ways as a sum of consecutive naturals, for example, 126986 + ... + 129327.

It is an arithmetic number, because the mean of its divisors is an integer number (75100002).

Almost surely, 2^300142523 is an apocalyptic number.

300142523 is a deficient number, since it is larger than the sum of its proper divisors (257485).

300142523 is a wasteful number, since it uses less digits than its factorization.

300142523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257484.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 300142523 is about 17324.6218717754. The cubic root of 300142523 is about 669.5389439570.

Adding to 300142523 its reverse (325241003), we get a palindrome (625383526).

The spelling of 300142523 in words is "three hundred million, one hundred forty-two thousand, five hundred twenty-three".