1046043021 has 32 divisors (see below), whose sum is σ = 1496154240. Its totient is φ = 648781056.

The previous prime is 1046043017. The next prime is 1046043041. The reversal of 1046043021 is 1203406401.

It is not a de Polignac number, because 1046043021 - 2² = 1046043017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1046043001) 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 31 ways as a sum of consecutive naturals, for example, 342915 + ... + 345951.

It is an arithmetic number, because the mean of its divisors is an integer number (46754820).

Almost surely, 2^1046043021 is an apocalyptic number.

It is an amenable number.

1046043021 is a deficient number, since it is larger than the sum of its proper divisors (450111219).

1046043021 is a wasteful number, since it uses less digits than its factorization.

1046043021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1046043021 is about 32342.5883472551. The cubic root of 1046043021 is about 1015.1179689298.

Adding to 1046043021 its reverse (1203406401), we get a palindrome (2249449422).

The spelling of 1046043021 in words is "one billion, forty-six million, forty-three thousand, twenty-one".