1509421239149 has 4 divisors (see below), whose sum is σ = 1509851154720. Its totient is φ = 1508991323580.

The previous prime is 1509421239127. The next prime is 1509421239173. The reversal of 1509421239149 is 9419321249051.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 1509421239149 - 2¹² = 1509421235053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1509421239097 and 1509421239106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1509421239049) 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, 214952519 + ... + 214959540.

It is an arithmetic number, because the mean of its divisors is an integer number (377462788680).

Almost surely, 2^{1509421239149} is an apocalyptic number.

It is an amenable number.

1509421239149 is a deficient number, since it is larger than the sum of its proper divisors (429915571).

1509421239149 is an equidigital number, since it uses as much as digits as its factorization.

1509421239149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429915570.

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 1509421239149 in words is "one trillion, five hundred nine billion, four hundred twenty-one million, two hundred thirty-nine thousand, one hundred forty-nine".