742278 has 16 divisors (see below), whose sum is σ = 1494576. Its totient is φ = 245760.

The previous prime is 742277. The next prime is 742283. The reversal of 742278 is 872247.

742278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742277) 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, 838 + ... + 1478.

It is an arithmetic number, because the mean of its divisors is an integer number (93411).

2⁷⁴²²⁷⁸ is an apocalyptic number.

742278 is an abundant number, since it is smaller than the sum of its proper divisors (752298).

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

742278 is a wasteful number, since it uses less digits than its factorization.

742278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839.

The product of its digits is 6272, while the sum is 30.

The square root of 742278 is about 861.5555698851. Note that the first 4 decimals coincide. The cubic root of 742278 is about 90.5431354252.

The spelling of 742278 in words is "seven hundred forty-two thousand, two hundred seventy-eight".