8520055142 has 4 divisors (see below), whose sum is σ = 12780082716. Its totient is φ = 4260027570.

The previous prime is 8520055099. The next prime is 8520055147. The reversal of 8520055142 is 2415500258.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2415500258 = 2 ⋅1207750129.

It is a junction number, because it is equal to n+sod(n) for n = 8520055099 and 8520055108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8520055147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2130013784 + ... + 2130013787.

It is an arithmetic number, because the mean of its divisors is an integer number (3195020679).

Almost surely, 2^8520055142 is an apocalyptic number.

8520055142 is a deficient number, since it is larger than the sum of its proper divisors (4260027574).

8520055142 is a wasteful number, since it uses less digits than its factorization.

8520055142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4260027573.

The product of its (nonzero) digits is 16000, while the sum is 32.

The square root of 8520055142 is about 92304.1447715107. The cubic root of 8520055142 is about 2042.4313524767.

The spelling of 8520055142 in words is "eight billion, five hundred twenty million, fifty-five thousand, one hundred forty-two".