7145213 has 4 divisors (see below), whose sum is σ = 7214688. Its totient is φ = 7075740.

The previous prime is 7145209. The next prime is 7145231. The reversal of 7145213 is 3125417.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3125417 = 29 ⋅107773.

It is a cyclic number.

It is not a de Polignac number, because 7145213 - 2² = 7145209 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 (7145233) 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, 34583 + ... + 34788.

It is an arithmetic number, because the mean of its divisors is an integer number (1803672).

Almost surely, 2^7145213 is an apocalyptic number.

It is an amenable number.

7145213 is a deficient number, since it is larger than the sum of its proper divisors (69475).

7145213 is a wasteful number, since it uses less digits than its factorization.

7145213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69474.

The product of its digits is 840, while the sum is 23.

The square root of 7145213 is about 2673.0531233030. The cubic root of 7145213 is about 192.6068490976.

It can be divided in two parts, 71 and 45213, that multiplied together give a palindrome (3210123).

The spelling of 7145213 in words is "seven million, one hundred forty-five thousand, two hundred thirteen".