1409125139 has 8 divisors (see below), whose sum is σ = 1488065280. Its totient is φ = 1330662600.

The previous prime is 1409125129. The next prime is 1409125171. The reversal of 1409125139 is 9315219041.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1409125139 - 2²⁰ = 1408076563 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1409125099 and 1409125108.

It is not an unprimeable number, because it can be changed into a prime (1409125129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113327 + ... + 125144.

It is an arithmetic number, because the mean of its divisors is an integer number (186008160).

Almost surely, 2^1409125139 is an apocalyptic number.

1409125139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1409125139 is a deficient number, since it is larger than the sum of its proper divisors (78940141).

1409125139 is a wasteful number, since it uses less digits than its factorization.

1409125139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238801.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 1409125139 is about 37538.3156121848. The cubic root of 1409125139 is about 1121.1142023690.

The spelling of 1409125139 in words is "one billion, four hundred nine million, one hundred twenty-five thousand, one hundred thirty-nine".