1387137 has 8 divisors (see below), whose sum is σ = 1892704. Its totient is φ = 903168.

The previous prime is 1387129. The next prime is 1387147. The reversal of 1387137 is 7317831.

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

It is not a de Polignac number, because 1387137 - 2³ = 1387129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1387117) 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, 5248 + ... + 5505.

It is an arithmetic number, because the mean of its divisors is an integer number (236588).

2^1387137 is an apocalyptic number.

It is an amenable number.

1387137 is a deficient number, since it is larger than the sum of its proper divisors (505567).

1387137 is a wasteful number, since it uses less digits than its factorization.

1387137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10799.

The product of its digits is 3528, while the sum is 30.

The square root of 1387137 is about 1177.7678039410. The cubic root of 1387137 is about 111.5252277235.

It can be divided in two parts, 138 and 7137, that multiplied together give a triangular number (984906 = T₁₄₀₃).

The spelling of 1387137 in words is "one million, three hundred eighty-seven thousand, one hundred thirty-seven".