1387023 has 12 divisors (see below), whose sum is σ = 2033304. Its totient is φ = 840400.

The previous prime is 1387021. The next prime is 1387037. The reversal of 1387023 is 3207831.

It is not a de Polignac number, because 1387023 - 2¹ = 1387021 is a prime.

1387023 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1386984 and 1387002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1548 + ... + 2273.

It is an arithmetic number, because the mean of its divisors is an integer number (169442).

2^1387023 is an apocalyptic number.

1387023 is a deficient number, since it is larger than the sum of its proper divisors (646281).

1387023 is a wasteful number, since it uses less digits than its factorization.

1387023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3846 (or 3835 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 1387023 is about 1177.7194063103. The cubic root of 1387023 is about 111.5221724559.

The spelling of 1387023 in words is "one million, three hundred eighty-seven thousand, twenty-three".