1021305074 has 8 divisors (see below), whose sum is σ = 1545515100. Its totient is φ = 506133376.

The previous prime is 1021305067. The next prime is 1021305079. The reversal of 1021305074 is 4705031201.

It can be written as a sum of positive squares in 2 ways, for example, as 1021249849 + 55225 = 31957^2 + 235^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1021305079) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2259299 + ... + 2259750.

Almost surely, 2^1021305074 is an apocalyptic number.

1021305074 is a deficient number, since it is larger than the sum of its proper divisors (524210026).

1021305074 is a wasteful number, since it uses less digits than its factorization.

1021305074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4519164.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 1021305074 is about 31957.8640400137. The cubic root of 1021305074 is about 1007.0518459100.

Adding to 1021305074 its reverse (4705031201), we get a palindrome (5726336275).

The spelling of 1021305074 in words is "one billion, twenty-one million, three hundred five thousand, seventy-four".