15420042401 has 8 divisors (see below), whose sum is σ = 16234955520. Its totient is φ = 14605462512.

The previous prime is 15420042349. The next prime is 15420042403. The reversal of 15420042401 is 10424002451.

15420042401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15420042401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15420042403) by changing a digit.

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, 14651 + ... + 176223.

It is an arithmetic number, because the mean of its divisors is an integer number (2029369440).

Almost surely, 2^15420042401 is an apocalyptic number.

It is an amenable number.

15420042401 is a deficient number, since it is larger than the sum of its proper divisors (814913119).

15420042401 is a wasteful number, since it uses less digits than its factorization.

15420042401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166615.

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

Adding to 15420042401 its reverse (10424002451), we get a palindrome (25844044852).

The spelling of 15420042401 in words is "fifteen billion, four hundred twenty million, forty-two thousand, four hundred one".