742420 has 24 divisors (see below), whose sum is σ = 1782144. Its totient is φ = 254496.

The previous prime is 742409. The next prime is 742439. The reversal of 742420 is 24247.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2512 + ... + 2791.

It is an arithmetic number, because the mean of its divisors is an integer number (74256).

2⁷⁴²⁴²⁰ is an apocalyptic number.

742420 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

742420 is an abundant number, since it is smaller than the sum of its proper divisors (1039724).

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

742420 is a wasteful number, since it uses less digits than its factorization.

742420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5319 (or 5317 counting only the distinct ones).

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

The square root of 742420 is about 861.6379750220. The cubic root of 742420 is about 90.5489087812.

Adding to 742420 its reverse (24247), we get a palindrome (766667).

The spelling of 742420 in words is "seven hundred forty-two thousand, four hundred twenty", and thus it is an iban number.