7126987 has 8 divisors (see below), whose sum is σ = 8499456. Its totient is φ = 5843112.

The previous prime is 7126981. The next prime is 7126997. The reversal of 7126987 is 7896217.

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

It is a cyclic number.

It is not a de Polignac number, because 7126987 - 2³ = 7126979 is a prime.

7126987 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7126981) 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, 21973 + ... + 22294.

It is an arithmetic number, because the mean of its divisors is an integer number (1062432).

Almost surely, 2^7126987 is an apocalyptic number.

7126987 is a deficient number, since it is larger than the sum of its proper divisors (1372469).

7126987 is a wasteful number, since it uses less digits than its factorization.

7126987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44297.

The product of its digits is 42336, while the sum is 40.

The square root of 7126987 is about 2669.6417362635. The cubic root of 7126987 is about 192.4429425545.

The spelling of 7126987 in words is "seven million, one hundred twenty-six thousand, nine hundred eighty-seven".