7042491 has 16 divisors (see below), whose sum is σ = 10544800. Its totient is φ = 4644864.

The previous prime is 7042459. The next prime is 7042493. The reversal of 7042491 is 1942407.

It is a happy number.

It is not a de Polignac number, because 7042491 - 2⁵ = 7042459 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

7042491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7042493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1275 + ... + 3963.

It is an arithmetic number, because the mean of its divisors is an integer number (659050).

Almost surely, 2^7042491 is an apocalyptic number.

7042491 is a deficient number, since it is larger than the sum of its proper divisors (3502309).

7042491 is a wasteful number, since it uses less digits than its factorization.

7042491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795 (or 2789 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 7042491 is about 2653.7692062423. The cubic root of 7042491 is about 191.6793965920.

Adding to 7042491 its reverse (1942407), we get a palindrome (8984898).

The spelling of 7042491 in words is "seven million, forty-two thousand, four hundred ninety-one".