1381022 has 4 divisors (see below), whose sum is σ = 2071536. Its totient is φ = 690510.

The previous prime is 1380997. The next prime is 1381027. The reversal of 1381022 is 2201831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2201831 = 103 ⋅21377.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345254 + ... + 345257.

It is an arithmetic number, because the mean of its divisors is an integer number (517884).

2^1381022 is an apocalyptic number.

1381022 is a deficient number, since it is larger than the sum of its proper divisors (690514).

1381022 is an equidigital number, since it uses as much as digits as its factorization.

1381022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690513.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1381022 is about 1175.1689240275. The cubic root of 1381022 is about 111.3611051789.

Adding to 1381022 its reverse (2201831), we get a palindrome (3582853).

The spelling of 1381022 in words is "one million, three hundred eighty-one thousand, twenty-two".