15042423434 has 4 divisors (see below), whose sum is σ = 22563635154. Its totient is φ = 7521211716.

The previous prime is 15042423421. The next prime is 15042423439. The reversal of 15042423434 is 43432424051.

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., 8754409225 + 6288014209 = 93565^2 + 79297^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 15042423434.

It is not an unprimeable number, because it can be changed into a prime (15042423439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3760605857 + ... + 3760605860.

Almost surely, 2^15042423434 is an apocalyptic number.

15042423434 is a deficient number, since it is larger than the sum of its proper divisors (7521211720).

15042423434 is an equidigital number, since it uses as much as digits as its factorization.

15042423434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7521211719.

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 15042423434 its reverse (43432424051), we get a palindrome (58474847485).

The spelling of 15042423434 in words is "fifteen billion, forty-two million, four hundred twenty-three thousand, four hundred thirty-four".