1022023144 has 8 divisors (see below), whose sum is σ = 1916293410. Its totient is φ = 511011568.

The previous prime is 1022023127. The next prime is 1022023157. The reversal of 1022023144 is 4413202201.

It can be written as a sum of positive squares in only one way, i.e., 523036900 + 498986244 = 22870^2 + 22338^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63876439 + ... + 63876454.

Almost surely, 2^1022023144 is an apocalyptic number.

It is an amenable number.

1022023144 is a deficient number, since it is larger than the sum of its proper divisors (894270266).

1022023144 is a wasteful number, since it uses less digits than its factorization.

1022023144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127752899 (or 127752895 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1022023144 is about 31969.0967029098. The cubic root of 1022023144 is about 1007.2878068477.

Adding to 1022023144 its reverse (4413202201), we get a palindrome (5435225345).

The spelling of 1022023144 in words is "one billion, twenty-two million, twenty-three thousand, one hundred forty-four".