1387141 has 6 divisors (see below), whose sum is σ = 1613670. Its totient is φ = 1188936.

The previous prime is 1387129. The next prime is 1387147. The reversal of 1387141 is 1417831.

It can be written as a sum of positive squares in only one way, i.e., 1147041 + 240100 = 1071^2 + 490^2 .

It is not a de Polignac number, because 1387141 - 2⁵ = 1387109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14106 + ... + 14203.

It is an arithmetic number, because the mean of its divisors is an integer number (268945).

2^1387141 is an apocalyptic number.

It is an amenable number.

1387141 is a deficient number, since it is larger than the sum of its proper divisors (226529).

1387141 is an equidigital number, since it uses as much as digits as its factorization.

1387141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28323 (or 28316 counting only the distinct ones).

The product of its digits is 672, while the sum is 25.

The square root of 1387141 is about 1177.7695020674. The cubic root of 1387141 is about 111.5253349228.

It can be divided in two parts, 13871 and 41, that multiplied together give a triangular number (568711 = T₁₀₆₆).

The spelling of 1387141 in words is "one million, three hundred eighty-seven thousand, one hundred forty-one".