7403420 has 24 divisors (see below), whose sum is σ = 16050048. Its totient is φ = 2865600.

The previous prime is 7403419. The next prime is 7403423. The reversal of 7403420 is 243047.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 7403392 and 7403401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7403423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5351 + ... + 6590.

It is an arithmetic number, because the mean of its divisors is an integer number (668752).

Almost surely, 2^7403420 is an apocalyptic number.

It is an amenable number.

7403420 is an abundant number, since it is smaller than the sum of its proper divisors (8646628).

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

7403420 is a wasteful number, since it uses less digits than its factorization.

7403420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11981 (or 11979 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 7403420 is about 2720.9226376360. The cubic root of 7403420 is about 194.8995318528.

Adding to 7403420 its reverse (243047), we get a palindrome (7646467).

The spelling of 7403420 in words is "seven million, four hundred three thousand, four hundred twenty".