1020411144 has 48 divisors (see below), whose sum is σ = 2777680620. Its totient is φ = 338405760.

The previous prime is 1020411143. The next prime is 1020411149. The reversal of 1020411144 is 4411140201.

It can be written as a sum of positive squares in 2 ways, for example, as 1000963044 + 19448100 = 31638^2 + 4410^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1020411143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21787 + ... + 50154.

Almost surely, 2^1020411144 is an apocalyptic number.

It is an amenable number.

1020411144 is an abundant number, since it is smaller than the sum of its proper divisors (1757269476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1020411144 is a wasteful number, since it uses less digits than its factorization.

1020411144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72150 (or 72143 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1020411144 is about 31943.8749058407. The cubic root of 1020411144 is about 1006.7579420086.

Adding to 1020411144 its reverse (4411140201), we get a palindrome (5431551345).

It can be divided in two parts, 1020 and 411144, that added together give a square (412164 = 642²).

The spelling of 1020411144 in words is "one billion, twenty million, four hundred eleven thousand, one hundred forty-four".