102142043204 has 24 divisors (see below), whose sum is σ = 179119835160. Its totient is φ = 50965035264.

The previous prime is 102142043197. The next prime is 102142043207. The reversal of 102142043204 is 402340241201.

It can be written as a sum of positive squares in 4 ways, for example, as 40160961604 + 61981081600 = 200402^2 + 248960^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102142043204.

It is not an unprimeable number, because it can be changed into a prime (102142043207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5290112 + ... + 5309384.

It is an arithmetic number, because the mean of its divisors is an integer number (7463326465).

Almost surely, 2^102142043204 is an apocalyptic number.

It is an amenable number.

102142043204 is a deficient number, since it is larger than the sum of its proper divisors (76977791956).

102142043204 is a wasteful number, since it uses less digits than its factorization.

102142043204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21959 (or 21957 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 102142043204 its reverse (402340241201), we get a palindrome (504482284405).

The spelling of 102142043204 in words is "one hundred two billion, one hundred forty-two million, forty-three thousand, two hundred four".