7120426 has 4 divisors (see below), whose sum is σ = 10680642. Its totient is φ = 3560212.

The previous prime is 7120423. The next prime is 7120447. The reversal of 7120426 is 6240217.

7120426 is nontrivially palindromic in base 3.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6240217 = 257 ⋅24281.

It can be written as a sum of positive squares in only one way, i.e., 6007401 + 1113025 = 2451^2 + 1055^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 7120397 and 7120406.

It is not an unprimeable number, because it can be changed into a prime (7120423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1780105 + ... + 1780108.

Almost surely, 2^7120426 is an apocalyptic number.

7120426 is a deficient number, since it is larger than the sum of its proper divisors (3560216).

7120426 is a wasteful number, since it uses less digits than its factorization.

7120426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3560215.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 7120426 is about 2668.4126367562. The cubic root of 7120426 is about 192.3838710378.

The spelling of 7120426 in words is "seven million, one hundred twenty thousand, four hundred twenty-six".