1021244394 has 8 divisors (see below), whose sum is σ = 2042488800. Its totient is φ = 340414796.

The previous prime is 1021244327. The next prime is 1021244401. The reversal of 1021244394 is 4934421201.

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

1021244394 is an admirable number.

It is a super-2 number, since 2×1021244394² = 2085880224552854472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85103694 + ... + 85103705.

It is an arithmetic number, because the mean of its divisors is an integer number (255311100).

Almost surely, 2^1021244394 is an apocalyptic number.

1021244394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1021244394 is a wasteful number, since it uses less digits than its factorization.

1021244394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170207404.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 1021244394 is about 31956.9146508232. The cubic root of 1021244394 is about 1007.0319011295.

Adding to 1021244394 its reverse (4934421201), we get a palindrome (5955665595).

The spelling of 1021244394 in words is "one billion, twenty-one million, two hundred forty-four thousand, three hundred ninety-four".