1001021242 has 16 divisors (see below), whose sum is σ = 1619890272. Its totient is φ = 461193840.

The previous prime is 1001021233. The next prime is 1001021257. The reversal of 1001021242 is 2421201001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18868 + ... + 48559.

It is an arithmetic number, because the mean of its divisors is an integer number (101243142).

Almost surely, 2^1001021242 is an apocalyptic number.

1001021242 is a deficient number, since it is larger than the sum of its proper divisors (618869030).

1001021242 is a wasteful number, since it uses less digits than its factorization.

1001021242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68013.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1001021242 is about 31638.9197350352. The cubic root of 1001021242 is about 1000.3402981840.

Adding to 1001021242 its reverse (2421201001), we get a palindrome (3422222243).

The spelling of 1001021242 in words is "one billion, one million, twenty-one thousand, two hundred forty-two".