1021140344 has 32 divisors (see below), whose sum is σ = 2263615200. Its totient is φ = 422540160.

The previous prime is 1021140331. The next prime is 1021140443. The reversal of 1021140344 is 4430411201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312767 + ... + 316014.

It is an arithmetic number, because the mean of its divisors is an integer number (70737975).

Almost surely, 2^1021140344 is an apocalyptic number.

1021140344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1021140344 is an abundant number, since it is smaller than the sum of its proper divisors (1242474856).

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

1021140344 is a wasteful number, since it uses less digits than its factorization.

1021140344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628823 (or 628819 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1021140344 is about 31955.2866361734. The cubic root of 1021140344 is about 1006.9976993170.

Adding to 1021140344 its reverse (4430411201), we get a palindrome (5451551545).

The spelling of 1021140344 in words is "one billion, twenty-one million, one hundred forty thousand, three hundred forty-four".