1017974421 has 12 divisors (see below), whose sum is σ = 1470770860. Its totient is φ = 678481920.

The previous prime is 1017974383. The next prime is 1017974429. The reversal of 1017974421 is 1244797101.

It can be written as a sum of positive squares in 2 ways, for example, as 695376900 + 322597521 = 26370^2 + 17961^2 .

It is not a de Polignac number, because 1017974421 - 2⁹ = 1017973909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1017974429) 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, 32661 + ... + 55701.

Almost surely, 2^1017974421 is an apocalyptic number.

It is an amenable number.

1017974421 is a deficient number, since it is larger than the sum of its proper divisors (452796439).

1017974421 is a wasteful number, since it uses less digits than its factorization.

1017974421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27956 (or 27953 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 1017974421 is about 31905.7114166100. The cubic root of 1017974421 is about 1005.9559301378.

The spelling of 1017974421 in words is "one billion, seventeen million, nine hundred seventy-four thousand, four hundred twenty-one".