15244241421 has 16 divisors (see below), whose sum is σ = 20468585984. Its totient is φ = 10091594304.

The previous prime is 15244241393. The next prime is 15244241423. The reversal of 15244241421 is 12414244251.

It is not a de Polignac number, because 15244241421 - 2¹⁴ = 15244225037 is a prime.

It is a super-3 number, since 3×15244241421³ (a number of 32 digits) contains 333 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 (15244241423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236895 + ... + 294291.

It is an arithmetic number, because the mean of its divisors is an integer number (1279286624).

Almost surely, 2^15244241421 is an apocalyptic number.

It is an amenable number.

15244241421 is a deficient number, since it is larger than the sum of its proper divisors (5224344563).

15244241421 is a wasteful number, since it uses less digits than its factorization.

15244241421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58020.

The product of its digits is 10240, while the sum is 30.

Adding to 15244241421 its reverse (12414244251), we get a palindrome (27658485672).

The spelling of 15244241421 in words is "fifteen billion, two hundred forty-four million, two hundred forty-one thousand, four hundred twenty-one".