15204142420 has 24 divisors (see below), whose sum is σ = 32094140904. Its totient is φ = 6050144256.

The previous prime is 15204142339. The next prime is 15204142483. The reversal of 15204142420 is 2424140251.

15204142420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2247328836 + 12956813584 = 47406^2 + 113828^2 .

It is a congruent number.

It is an unprimeable number.

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, 1965589 + ... + 1973308.

It is an arithmetic number, because the mean of its divisors is an integer number (1337255871).

Almost surely, 2^15204142420 is an apocalyptic number.

15204142420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15204142420 is an abundant number, since it is smaller than the sum of its proper divisors (16889998484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15204142420 is a wasteful number, since it uses less digits than its factorization.

15204142420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3939099 (or 3939097 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 15204142420 its reverse (2424140251), we get a palindrome (17628282671).

The spelling of 15204142420 in words is "fifteen billion, two hundred four million, one hundred forty-two thousand, four hundred twenty".