100135405042 has 8 divisors (see below), whose sum is σ = 151032959532. Its totient is φ = 49791085200.

The previous prime is 100135405033. The next prime is 100135405081. The reversal of 100135405042 is 240504531001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 68586895881 + 31548509161 = 261891^2 + 177619^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 100135404998 and 100135405016.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138308209 + ... + 138308932.

Almost surely, 2^100135405042 is an apocalyptic number.

100135405042 is a deficient number, since it is larger than the sum of its proper divisors (50897554490).

100135405042 is a wasteful number, since it uses less digits than its factorization.

100135405042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276617324.

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

Adding to 100135405042 its reverse (240504531001), we get a palindrome (340639936043).

The spelling of 100135405042 in words is "one hundred billion, one hundred thirty-five million, four hundred five thousand, forty-two".