1020412344 has 128 divisors (see below), whose sum is σ = 3018355200. Its totient is φ = 281387520.

The previous prime is 1020412333. The next prime is 1020412373. The reversal of 1020412344 is 4432140201.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1020412344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 863434 + ... + 864614.

It is an arithmetic number, because the mean of its divisors is an integer number (23580900).

Almost surely, 2^1020412344 is an apocalyptic number.

1020412344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020412344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1509177600).

1020412344 is an abundant number, since it is smaller than the sum of its proper divisors (1997942856).

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

1020412344 is a wasteful number, since it uses less digits than its factorization.

1020412344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373 (or 1369 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1020412344 is about 31943.8936887788. The cubic root of 1020412344 is about 1006.7583366564.

Adding to 1020412344 its reverse (4432140201), we get a palindrome (5452552545).

The spelling of 1020412344 in words is "one billion, twenty million, four hundred twelve thousand, three hundred forty-four".