1021071492 has 72 divisors (see below), whose sum is σ = 2953641600. Its totient is φ = 291351168.

The previous prime is 1021071487. The next prime is 1021071511. The reversal of 1021071492 is 2941701201.

1021071492 is a `hidden beast` number, since 102 + 1 + 0 + 71 + 492 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 229384 + ... + 233792.

It is an arithmetic number, because the mean of its divisors is an integer number (41022800).

Almost surely, 2^1021071492 is an apocalyptic number.

1021071492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1021071492 is an abundant number, since it is smaller than the sum of its proper divisors (1932570108).

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

1021071492 is a wasteful number, since it uses less digits than its factorization.

1021071492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5345 (or 5340 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1021071492 is about 31954.2093001845. The cubic root of 1021071492 is about 1006.9750660050.

Adding to 1021071492 its reverse (2941701201), we get a palindrome (3962772693).

The spelling of 1021071492 in words is "one billion, twenty-one million, seventy-one thousand, four hundred ninety-two".