7402420 has 12 divisors (see below), whose sum is σ = 15545124. Its totient is φ = 2960960.

The previous prime is 7402403. The next prime is 7402433. The reversal of 7402420 is 242047.

It can be written as a sum of positive squares in 2 ways, for example, as 5253264 + 2149156 = 2292^2 + 1466^2 .

It is a nialpdrome in base 14.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 185041 + ... + 185080.

It is an arithmetic number, because the mean of its divisors is an integer number (1295427).

Almost surely, 2^7402420 is an apocalyptic number.

It is an amenable number.

7402420 is an abundant number, since it is smaller than the sum of its proper divisors (8142704).

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

7402420 is a wasteful number, since it uses less digits than its factorization.

7402420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370130 (or 370128 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 7402420 is about 2720.7388702336. The cubic root of 7402420 is about 194.8907562551.

Adding to 7402420 its reverse (242047), we get a palindrome (7644467).

It can be divided in two parts, 740 and 2420, that added together give a triangular number (3160 = T₇₉).

The spelling of 7402420 in words is "seven million, four hundred two thousand, four hundred twenty".