1021242000 has 80 divisors (see below), whose sum is σ = 3292503552. Its totient is φ = 272329600.

The previous prime is 1021241987. The next prime is 1021242011. The reversal of 1021242000 is 2421201.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (12).

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 15 ways as a sum of consecutive naturals, for example, 79104 + ... + 91103.

Almost surely, 2^1021242000 is an apocalyptic number.

1021242000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021242000 is an abundant number, since it is smaller than the sum of its proper divisors (2271261552).

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

1021242000 is a wasteful number, since it uses less digits than its factorization.

1021242000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170233 (or 170217 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1021242000 is about 31956.8771941190. The cubic root of 1021242000 is about 1007.0311142346.

Adding to 1021242000 its reverse (2421201), we get a palindrome (1023663201).

The spelling of 1021242000 in words is "one billion, twenty-one million, two hundred forty-two thousand".