10042987 has 2 divisors, whose sum is σ = 10042988. Its totient is φ = 10042986.

The previous prime is 10042969. The next prime is 10042993. The reversal of 10042987 is 78924001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10042987 is a prime.

It is not a weakly prime, because it can be changed into another prime (10042957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5021493 + 5021494.

It is an arithmetic number, because the mean of its divisors is an integer number (5021494).

Almost surely, 2^10042987 is an apocalyptic number.

10042987 is a deficient number, since it is larger than the sum of its proper divisors (1).

10042987 is an equidigital number, since it uses as much as digits as its factorization.

10042987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 10042987 is about 3169.0672129193. The cubic root of 10042987 is about 215.7517366543.

Adding to 10042987 its reverse (78924001), we get a palindrome (88966988).

The spelling of 10042987 in words is "ten million, forty-two thousand, nine hundred eighty-seven".