1381267 has 8 divisors (see below), whose sum is σ = 1510272. Its totient is φ = 1257600.

The previous prime is 1381231. The next prime is 1381271. The reversal of 1381267 is 7621831.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1381267 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1381207) 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, 784 + ... + 1837.

It is an arithmetic number, because the mean of its divisors is an integer number (188784).

2^1381267 is an apocalyptic number.

1381267 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1381267 is a deficient number, since it is larger than the sum of its proper divisors (129005).

1381267 is a wasteful number, since it uses less digits than its factorization.

1381267 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669.

The product of its digits is 2016, while the sum is 28.

The square root of 1381267 is about 1175.2731597378. The cubic root of 1381267 is about 111.3676901229.

The spelling of 1381267 in words is "one million, three hundred eighty-one thousand, two hundred sixty-seven".