154104514446242 has 4 divisors (see below), whose sum is σ = 231156771669366. Its totient is φ = 77052257223120.

The previous prime is 154104514446191. The next prime is 154104514446257. The reversal of 154104514446242 is 242644415401451.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 148535863125841 + 5568651320401 = 12187529^2 + 2359799^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38526128611559 + ... + 38526128611562.

Almost surely, 2^{154104514446242} is an apocalyptic number.

154104514446242 is a deficient number, since it is larger than the sum of its proper divisors (77052257223124).

154104514446242 is an equidigital number, since it uses as much as digits as its factorization.

154104514446242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77052257223123.

The product of its (nonzero) digits is 2457600, while the sum is 47.

Adding to 154104514446242 its reverse (242644415401451), we get a palindrome (396748929847693).

The spelling of 154104514446242 in words is "one hundred fifty-four trillion, one hundred four billion, five hundred fourteen million, four hundred forty-six thousand, two hundred forty-two".