15042414221 has 4 divisors (see below), whose sum is σ = 15043487232. Its totient is φ = 15041341212.

The previous prime is 15042414217. The next prime is 15042414223. The reversal of 15042414221 is 12241424051.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12241424051 = 6451 ⋅1897601.

It is a cyclic number.

It is not a de Polignac number, because 15042414221 - 2² = 15042414217 is a prime.

It is a super-2 number, since 2×15042414221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15042414223) 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 in 3 ways as a sum of consecutive naturals, for example, 515195 + ... + 543608.

It is an arithmetic number, because the mean of its divisors is an integer number (3760871808).

Almost surely, 2^15042414221 is an apocalyptic number.

It is an amenable number.

15042414221 is a deficient number, since it is larger than the sum of its proper divisors (1073011).

15042414221 is a wasteful number, since it uses less digits than its factorization.

15042414221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073010.

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 15042414221 its reverse (12241424051), we get a palindrome (27283838272).

The spelling of 15042414221 in words is "fifteen billion, forty-two million, four hundred fourteen thousand, two hundred twenty-one".