20143242135 has 32 divisors (see below), whose sum is σ = 36344705280. Its totient is φ = 10582713504.

The previous prime is 20143242127. The next prime is 20143242143. The reversal of 20143242135 is 53124234102.

20143242135 is a `hidden beast` number, since 201 + 4 + 3 + 2 + 421 + 35 = 666.

It is an interprime number because it is at equal distance from previous prime (20143242127) and next prime (20143242143).

It is not a de Polignac number, because 20143242135 - 2³ = 20143242127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20143242099 and 20143242108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1104457 + ... + 1122546.

It is an arithmetic number, because the mean of its divisors is an integer number (1135772040).

Almost surely, 2^20143242135 is an apocalyptic number.

20143242135 is a deficient number, since it is larger than the sum of its proper divisors (16201463145).

20143242135 is a wasteful number, since it uses less digits than its factorization.

20143242135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2227084 (or 2227078 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 20143242135 its reverse (53124234102), we get a palindrome (73267476237).

The spelling of 20143242135 in words is "twenty billion, one hundred forty-three million, two hundred forty-two thousand, one hundred thirty-five".