7042513 has 4 divisors (see below), whose sum is σ = 7055460. Its totient is φ = 7029568.

The previous prime is 7042501. The next prime is 7042517. The reversal of 7042513 is 3152407.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3152407 = 541 ⋅5827.

It can be written as a sum of positive squares in 2 ways, for example, as 976144 + 6066369 = 988^2 + 2463^2 .

It is a cyclic number.

It is not a de Polignac number, because 7042513 - 2⁹ = 7042001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7042517) 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, 5620 + ... + 6757.

It is an arithmetic number, because the mean of its divisors is an integer number (1763865).

Almost surely, 2^7042513 is an apocalyptic number.

It is an amenable number.

7042513 is a deficient number, since it is larger than the sum of its proper divisors (12947).

7042513 is a wasteful number, since it uses less digits than its factorization.

7042513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12946.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 7042513 is about 2653.7733512868. The cubic root of 7042513 is about 191.6795961872.

The spelling of 7042513 in words is "seven million, forty-two thousand, five hundred thirteen".