1021330242 has 16 divisors (see below), whose sum is σ = 2269622880. Its totient is φ = 340443396.

The previous prime is 1021330241. The next prime is 1021330283. The reversal of 1021330242 is 2420331201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1021330241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9456708 + ... + 9456815.

It is an arithmetic number, because the mean of its divisors is an integer number (141851430).

Almost surely, 2^1021330242 is an apocalyptic number.

1021330242 is an abundant number, since it is smaller than the sum of its proper divisors (1248292638).

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

1021330242 is a wasteful number, since it uses less digits than its factorization.

1021330242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18913534 (or 18913528 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1021330242 is about 31958.2578060820. The cubic root of 1021330242 is about 1007.0601180947.

Adding to 1021330242 its reverse (2420331201), we get a palindrome (3441661443).

The spelling of 1021330242 in words is "one billion, twenty-one million, three hundred thirty thousand, two hundred forty-two".