1020291943 has 8 divisors (see below), whose sum is σ = 1116412416. Its totient is φ = 924732600.

The previous prime is 1020291919. The next prime is 1020291967. The reversal of 1020291943 is 3491920201.

It is an interprime number because it is at equal distance from previous prime (1020291919) and next prime (1020291967).

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

It is not a de Polignac number, because 1020291943 - 2⁵ = 1020291911 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 (1020291043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136471 + ... + 143752.

It is an arithmetic number, because the mean of its divisors is an integer number (139551552).

Almost surely, 2^1020291943 is an apocalyptic number.

1020291943 is a deficient number, since it is larger than the sum of its proper divisors (96120473).

1020291943 is a wasteful number, since it uses less digits than its factorization.

1020291943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280565.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 1020291943 is about 31942.0090633009. The cubic root of 1020291943 is about 1006.7187384557.

The spelling of 1020291943 in words is "one billion, twenty million, two hundred ninety-one thousand, nine hundred forty-three".