7142813 has 8 divisors (see below), whose sum is σ = 7441920. Its totient is φ = 6849360.

The previous prime is 7142809. The next prime is 7142819. The reversal of 7142813 is 3182417.

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 7142813 - 2² = 7142809 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7142819) 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, 1268 + ... + 3986.

It is an arithmetic number, because the mean of its divisors is an integer number (930240).

Almost surely, 2^7142813 is an apocalyptic number.

It is an amenable number.

7142813 is a deficient number, since it is larger than the sum of its proper divisors (299107).

7142813 is a wasteful number, since it uses less digits than its factorization.

7142813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2827.

The product of its digits is 1344, while the sum is 26.

The square root of 7142813 is about 2672.6041607391. The cubic root of 7142813 is about 192.5852818281.

The spelling of 7142813 in words is "seven million, one hundred forty-two thousand, eight hundred thirteen".