1387422 has 16 divisors (see below), whose sum is σ = 3083280. Its totient is φ = 462456.

The previous prime is 1387417. The next prime is 1387427. The reversal of 1387422 is 2247831.

It is an interprime number because it is at equal distance from previous prime (1387417) and next prime (1387427).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387427) 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, 12793 + ... + 12900.

It is an arithmetic number, because the mean of its divisors is an integer number (192705).

2^1387422 is an apocalyptic number.

1387422 is an abundant number, since it is smaller than the sum of its proper divisors (1695858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1387422 is a wasteful number, since it uses less digits than its factorization.

1387422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25704 (or 25698 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 1387422 is about 1177.8887893176. Note that the first 3 decimals coincide. The cubic root of 1387422 is about 111.5328651602.

The spelling of 1387422 in words is "one million, three hundred eighty-seven thousand, four hundred twenty-two".