1042021000 has 32 divisors (see below), whose sum is σ = 2438331480. Its totient is φ = 416808000.

The previous prime is 1042020983. The next prime is 1042021031. The reversal of 1042021000 is 1202401.

It can be written as a sum of positive squares in 4 ways, for example, as 310534884 + 731486116 = 17622^2 + 27046^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

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, 520011 + ... + 522010.

Almost surely, 2^1042021000 is an apocalyptic number.

1042021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1042021000 is an abundant number, since it is smaller than the sum of its proper divisors (1396310480).

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

1042021000 is a wasteful number, since it uses less digits than its factorization.

1042021000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042042 (or 1042028 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1042021000 is about 32280.3500600598. The cubic root of 1042021000 is about 1013.8152596671.

Adding to 1042021000 its reverse (1202401), we get a palindrome (1043223401).

The spelling of 1042021000 in words is "one billion, forty-two million, twenty-one thousand".