1381129 has 8 divisors (see below), whose sum is σ = 1466240. Its totient is φ = 1297296.

The previous prime is 1381111. The next prime is 1381141. The reversal of 1381129 is 9211831.

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 1381129 - 2¹⁷ = 1250057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1381109) 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, 2752 + ... + 3214.

It is an arithmetic number, because the mean of its divisors is an integer number (183280).

2^1381129 is an apocalyptic number.

1381129 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1381129 is a deficient number, since it is larger than the sum of its proper divisors (85111).

1381129 is a wasteful number, since it uses less digits than its factorization.

1381129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639.

The product of its digits is 432, while the sum is 25.

The square root of 1381129 is about 1175.2144485157. The cubic root of 1381129 is about 111.3639811482.

The spelling of 1381129 in words is "one million, three hundred eighty-one thousand, one hundred twenty-nine".