1000242257 has 8 divisors (see below), whose sum is σ = 1148880000. Its totient is φ = 853041024.

The previous prime is 1000242233. The next prime is 1000242317. The reversal of 1000242257 is 7522420001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000242257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000247257) 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, 357632 + ... + 360417.

It is an arithmetic number, because the mean of its divisors is an integer number (143610000).

Almost surely, 2^1000242257 is an apocalyptic number.

It is an amenable number.

1000242257 is a deficient number, since it is larger than the sum of its proper divisors (148637743).

1000242257 is an equidigital number, since it uses as much as digits as its factorization.

1000242257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718255.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 1000242257 is about 31626.6067892210. The cubic root of 1000242257 is about 1000.0807458133.

Adding to 1000242257 its reverse (7522420001), we get a palindrome (8522662258).

The spelling of 1000242257 in words is "one billion, two hundred forty-two thousand, two hundred fifty-seven".