7142987 has 2 divisors, whose sum is σ = 7142988. Its totient is φ = 7142986.

The previous prime is 7142981. The next prime is 7143001. The reversal of 7142987 is 7892417.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7142987 - 2⁶ = 7142923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7142987.

It is not a weakly prime, because it can be changed into another prime (7142981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3571493 + 3571494.

It is an arithmetic number, because the mean of its divisors is an integer number (3571494).

Almost surely, 2^7142987 is an apocalyptic number.

7142987 is a deficient number, since it is larger than the sum of its proper divisors (1).

7142987 is an equidigital number, since it uses as much as digits as its factorization.

7142987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 38.

The square root of 7142987 is about 2672.6367130607. The cubic root of 7142987 is about 192.5868456176.

The spelling of 7142987 in words is "seven million, one hundred forty-two thousand, nine hundred eighty-seven".