20352015142 has 4 divisors (see below), whose sum is σ = 30528022716. Its totient is φ = 10176007570.

The previous prime is 20352015139. The next prime is 20352015149. The reversal of 20352015142 is 24151025302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24151025302 = 2 ⋅12075512651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20352015149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5088003784 + ... + 5088003787.

It is an arithmetic number, because the mean of its divisors is an integer number (7632005679).

Almost surely, 2^20352015142 is an apocalyptic number.

20352015142 is a deficient number, since it is larger than the sum of its proper divisors (10176007574).

20352015142 is a wasteful number, since it uses less digits than its factorization.

20352015142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10176007573.

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 20352015142 in words is "twenty billion, three hundred fifty-two million, fifteen thousand, one hundred forty-two".