15241146421 has 4 divisors (see below), whose sum is σ = 15245105932. Its totient is φ = 15237186912.

The previous prime is 15241146407. The next prime is 15241146451. The reversal of 15241146421 is 12464114251.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9611645521 + 5629500900 = 98039^2 + 75030^2 .

It is a cyclic number.

It is not a de Polignac number, because 15241146421 - 2¹⁵ = 15241113653 is a prime.

It is a super-2 number, since 2×15241146421² (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 (15241146451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1973976 + ... + 1981681.

It is an arithmetic number, because the mean of its divisors is an integer number (3811276483).

Almost surely, 2^15241146421 is an apocalyptic number.

It is an amenable number.

15241146421 is a deficient number, since it is larger than the sum of its proper divisors (3959511).

15241146421 is an equidigital number, since it uses as much as digits as its factorization.

15241146421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3959510.

The product of its digits is 7680, while the sum is 31.

The spelling of 15241146421 in words is "fifteen billion, two hundred forty-one million, one hundred forty-six thousand, four hundred twenty-one".