7920426 has 16 divisors (see below), whose sum is σ = 16140384. Its totient is φ = 2590224.

The previous prime is 7920401. The next prime is 7920431. The reversal of 7920426 is 6240297.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 7920393 and 7920402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12136 + ... + 12771.

It is an arithmetic number, because the mean of its divisors is an integer number (1008774).

Almost surely, 2^7920426 is an apocalyptic number.

7920426 is an abundant number, since it is smaller than the sum of its proper divisors (8219958).

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

7920426 is a wasteful number, since it uses less digits than its factorization.

7920426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24965.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 7920426 is about 2814.3251411306. The cubic root of 7920426 is about 199.3346724841.

The spelling of 7920426 in words is "seven million, nine hundred twenty thousand, four hundred twenty-six".