1022138 has 8 divisors (see below), whose sum is σ = 1651188. Its totient is φ = 471744.

The previous prime is 1022137. The next prime is 1022141. The reversal of 1022138 is 8312201.

It can be written as a sum of positive squares in 2 ways, for example, as 1006009 + 16129 = 1003^2 + 127^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1022137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19631 + ... + 19682.

2^1022138 is an apocalyptic number.

1022138 is a deficient number, since it is larger than the sum of its proper divisors (629050).

1022138 is a wasteful number, since it uses less digits than its factorization.

1022138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39328.

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

The square root of 1022138 is about 1011.0084074824. The cubic root of 1022138 is about 100.7325538777.

Subtracting from 1022138 its sum of digits (17), we obtain a square (1022121 = 1011²).

Adding to 1022138 its reverse (8312201), we get a palindrome (9334339).

The spelling of 1022138 in words is "one million, twenty-two thousand, one hundred thirty-eight".