7042787 has 4 divisors (see below), whose sum is σ = 7413480. Its totient is φ = 6672096.

The previous prime is 7042781. The next prime is 7042801. The reversal of 7042787 is 7872407.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7872407 = 1657 ⋅4751.

It is a cyclic number.

It is not a de Polignac number, because 7042787 - 2⁶ = 7042723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7042781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185318 + ... + 185355.

It is an arithmetic number, because the mean of its divisors is an integer number (1853370).

Almost surely, 2^7042787 is an apocalyptic number.

7042787 is a deficient number, since it is larger than the sum of its proper divisors (370693).

7042787 is a wasteful number, since it uses less digits than its factorization.

7042787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370692.

The product of its (nonzero) digits is 21952, while the sum is 35.

The square root of 7042787 is about 2653.8249753893. The cubic root of 7042787 is about 191.6820820200.

The spelling of 7042787 in words is "seven million, forty-two thousand, seven hundred eighty-seven".