15421240043 has 8 divisors (see below), whose sum is σ = 16827102000. Its totient is φ = 14016033280.

The previous prime is 15421239979. The next prime is 15421240057. The reversal of 15421240043 is 34004212451.

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

It is a cyclic number.

It is not a de Polignac number, because 15421240043 - 2⁶ = 15421239979 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15421239994 and 15421240021.

It is not an unprimeable number, because it can be changed into a prime (15421245043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113918 + ... + 209331.

It is an arithmetic number, because the mean of its divisors is an integer number (2103387750).

Almost surely, 2^15421240043 is an apocalyptic number.

15421240043 is a deficient number, since it is larger than the sum of its proper divisors (1405861957).

15421240043 is a wasteful number, since it uses less digits than its factorization.

15421240043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327597.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 15421240043 its reverse (34004212451), we get a palindrome (49425452494).

The spelling of 15421240043 in words is "fifteen billion, four hundred twenty-one million, two hundred forty thousand, forty-three".