1380423 has 16 divisors (see below), whose sum is σ = 2044800. Its totient is φ = 821280.

The previous prime is 1380419. The next prime is 1380427. The reversal of 1380423 is 3240831.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1380419) and next prime (1380427).

It is not a de Polignac number, because 1380423 - 2² = 1380419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1380423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1593 + ... + 2301.

It is an arithmetic number, because the mean of its divisors is an integer number (127800).

2^1380423 is an apocalyptic number.

1380423 is a deficient number, since it is larger than the sum of its proper divisors (664377).

1380423 is a wasteful number, since it uses less digits than its factorization.

1380423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1380423 is about 1174.9140394088. The cubic root of 1380423 is about 111.3450023825.

It can be divided in two parts, 1380 and 423, that multiplied together give a triangular number (583740 = T₁₀₈₀).

The spelling of 1380423 in words is "one million, three hundred eighty thousand, four hundred twenty-three".