742620 has 24 divisors (see below), whose sum is σ = 2079504. Its totient is φ = 198016.

The previous prime is 742619. The next prime is 742657. The reversal of 742620 is 26247.

It is a happy number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 742620.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6129 + ... + 6248.

It is an arithmetic number, because the mean of its divisors is an integer number (86646).

2⁷⁴²⁶²⁰ is an apocalyptic number.

It is an amenable number.

742620 is an abundant number, since it is smaller than the sum of its proper divisors (1336884).

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

742620 is a wasteful number, since it uses less digits than its factorization.

742620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12389 (or 12387 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 742620 is about 861.7540252299. The cubic root of 742620 is about 90.5570390201.

Adding to 742620 its reverse (26247), we get a palindrome (768867).

The spelling of 742620 in words is "seven hundred forty-two thousand, six hundred twenty".