1021224040 has 32 divisors (see below), whose sum is σ = 2308078080. Its totient is φ = 406654272.

The previous prime is 1021224007. The next prime is 1021224077. The reversal of 1021224040 is 404221201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48324 + ... + 66163.

It is an arithmetic number, because the mean of its divisors is an integer number (72127440).

Almost surely, 2^1021224040 is an apocalyptic number.

1021224040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021224040 is an abundant number, since it is smaller than the sum of its proper divisors (1286854040).

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

1021224040 is a wasteful number, since it uses less digits than its factorization.

1021224040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114721 (or 114717 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1021224040 is about 31956.5961892064. The cubic root of 1021224040 is about 1007.0252108395.

Adding to 1021224040 its reverse (404221201), we get a palindrome (1425445241).

The spelling of 1021224040 in words is "one billion, twenty-one million, two hundred twenty-four thousand, forty".