142300521 has 12 divisors (see below), whose sum is σ = 224231280. Its totient is φ = 86242680.

The previous prime is 142300511. The next prime is 142300531. The reversal of 142300521 is 125003241.

142300521 is a `hidden beast` number, since 142 + 3 + 0 + 0 + 521 = 666.

It is an interprime number because it is at equal distance from previous prime (142300511) and next prime (142300531).

It is not a de Polignac number, because 142300521 - 2⁹ = 142300009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142300494 and 142300503.

It is not an unprimeable number, because it can be changed into a prime (142300511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 718591 + ... + 718788.

It is an arithmetic number, because the mean of its divisors is an integer number (18685940).

Almost surely, 2^142300521 is an apocalyptic number.

142300521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142300521 is a deficient number, since it is larger than the sum of its proper divisors (81930759).

142300521 is a wasteful number, since it uses less digits than its factorization.

142300521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437396 (or 1437393 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 142300521 is about 11928.9782043560. The cubic root of 142300521 is about 522.0781250048.

Adding to 142300521 its reverse (125003241), we get a palindrome (267303762).

The spelling of 142300521 in words is "one hundred forty-two million, three hundred thousand, five hundred twenty-one".