15421004042 has 16 divisors (see below), whose sum is σ = 23272704000. Its totient is φ = 7663579440.

The previous prime is 15421004023. The next prime is 15421004141. The reversal of 15421004042 is 24040012451.

15421004042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 15421003999 and 15421004017.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181559 + ... + 252597.

It is an arithmetic number, because the mean of its divisors is an integer number (1454544000).

Almost surely, 2^15421004042 is an apocalyptic number.

15421004042 is a deficient number, since it is larger than the sum of its proper divisors (7851699958).

15421004042 is a wasteful number, since it uses less digits than its factorization.

15421004042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71701.

The product of its (nonzero) digits is 1280, while the sum is 23.

Adding to 15421004042 its reverse (24040012451), we get a palindrome (39461016493).

The spelling of 15421004042 in words is "fifteen billion, four hundred twenty-one million, four thousand, forty-two".