74203420 has 12 divisors (see below), whose sum is σ = 155827224. Its totient is φ = 29681360.

The previous prime is 74203397. The next prime is 74203421. The reversal of 74203420 is 2430247.

It is a super-2 number, since 2×74203420² = 11012295079392800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74203391 and 74203400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74203421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1855066 + ... + 1855105.

It is an arithmetic number, because the mean of its divisors is an integer number (12985602).

Almost surely, 2^74203420 is an apocalyptic number.

It is an amenable number.

74203420 is an abundant number, since it is smaller than the sum of its proper divisors (81623804).

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

74203420 is a wasteful number, since it uses less digits than its factorization.

74203420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3710180 (or 3710178 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 74203420 is about 8614.1407000350. The cubic root of 74203420 is about 420.2179896355.

Adding to 74203420 its reverse (2430247), we get a palindrome (76633667).

The spelling of 74203420 in words is "seventy-four million, two hundred three thousand, four hundred twenty".