7421426 has 4 divisors (see below), whose sum is σ = 11132142. Its totient is φ = 3710712.

The previous prime is 7421383. The next prime is 7421437. The reversal of 7421426 is 6241247.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7295401 + 126025 = 2701^2 + 355^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7421395 and 7421404.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1855355 + ... + 1855358.

Almost surely, 2^7421426 is an apocalyptic number.

7421426 is a deficient number, since it is larger than the sum of its proper divisors (3710716).

7421426 is a wasteful number, since it uses less digits than its factorization.

7421426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3710715.

The product of its digits is 2688, while the sum is 26.

The square root of 7421426 is about 2724.2294323349. The cubic root of 7421426 is about 195.0574102274.

The spelling of 7421426 in words is "seven million, four hundred twenty-one thousand, four hundred twenty-six".