1021273794 has 24 divisors (see below), whose sum is σ = 2213714412. Its totient is φ = 340277760.

The previous prime is 1021273783. The next prime is 1021273927. The reversal of 1021273794 is 4973721201.

It can be written as a sum of positive squares in 2 ways, for example, as 933608025 + 87665769 = 30555^2 + 9363^2 .

It is a super-2 number, since 2×1021273794² = 2086000324622308872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35734 + ... + 57614.

Almost surely, 2^1021273794 is an apocalyptic number.

1021273794 is an abundant number, since it is smaller than the sum of its proper divisors (1192440618).

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

1021273794 is a wasteful number, since it uses less digits than its factorization.

1021273794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24482 (or 24479 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 1021273794 is about 31957.3746418569. The cubic root of 1021273794 is about 1007.0415646518.

Adding to 1021273794 its reverse (4973721201), we get a palindrome (5994994995).

The spelling of 1021273794 in words is "one billion, twenty-one million, two hundred seventy-three thousand, seven hundred ninety-four".