1380427 has 2 divisors, whose sum is σ = 1380428. Its totient is φ = 1380426.

The previous prime is 1380419. The next prime is 1380439. The reversal of 1380427 is 7240831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1380427 - 2³ = 1380419 is a prime.

It is an Ulam number.

1380427 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1380227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690213 + 690214.

It is an arithmetic number, because the mean of its divisors is an integer number (690214).

2^1380427 is an apocalyptic number.

1380427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380427 is an equidigital number, since it uses as much as digits as its factorization.

1380427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 1380427 is about 1174.9157416598. The cubic root of 1380427 is about 111.3451099291.

It can be divided in two parts, 13804 and 27, that added together give a palindrome (13831).

The spelling of 1380427 in words is "one million, three hundred eighty thousand, four hundred twenty-seven".