7143426 has 24 divisors (see below), whose sum is σ = 15553980. Its totient is φ = 2369376.

The previous prime is 7143421. The next prime is 7143439. The reversal of 7143426 is 6243417.

It can be written as a sum of positive squares in 2 ways, for example, as 6765201 + 378225 = 2601^2 + 615^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7143426.

It is not an unprimeable number, because it can be changed into a prime (7143421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3256 + ... + 4988.

Almost surely, 2^7143426 is an apocalyptic number.

7143426 is an abundant number, since it is smaller than the sum of its proper divisors (8410554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7143426 is a wasteful number, since it uses less digits than its factorization.

7143426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970 (or 1967 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 7143426 is about 2672.7188404320. The cubic root of 7143426 is about 192.5907909275.

Subtracting from 7143426 its reverse (6243417), we obtain a palindrome (900009).

It can be divided in two parts, 7143 and 426, that added together give a square (7569 = 87²).

The spelling of 7143426 in words is "seven million, one hundred forty-three thousand, four hundred twenty-six".