1002501242 has 4 divisors (see below), whose sum is σ = 1503751866. Its totient is φ = 501250620.

The previous prime is 1002501239. The next prime is 1002501257. The reversal of 1002501242 is 2421052001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2421052001 = 2477 ⋅977413.

It can be written as a sum of positive squares in only one way, i.e., 982885201 + 19616041 = 31351^2 + 4429^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1002501242.

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 as a sum of consecutive naturals, namely, 250625309 + ... + 250625312.

Almost surely, 2^1002501242 is an apocalyptic number.

1002501242 is a deficient number, since it is larger than the sum of its proper divisors (501250624).

1002501242 is an equidigital number, since it uses as much as digits as its factorization.

1002501242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501250623.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 1002501242 is about 31662.3000112121. The cubic root of 1002501242 is about 1000.8330531631.

Adding to 1002501242 its reverse (2421052001), we get a palindrome (3423553243).

The spelling of 1002501242 in words is "one billion, two million, five hundred one thousand, two hundred forty-two".