742478 has 8 divisors (see below), whose sum is σ = 1215000. Its totient is φ = 337480.

The previous prime is 742457. The next prime is 742499. The reversal of 742478 is 874247.

742478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (742457) and next prime (742499).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16853 + ... + 16896.

It is an arithmetic number, because the mean of its divisors is an integer number (151875).

2⁷⁴²⁴⁷⁸ is an apocalyptic number.

742478 is a deficient number, since it is larger than the sum of its proper divisors (472522).

742478 is a wasteful number, since it uses less digits than its factorization.

742478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33762.

The product of its digits is 12544, while the sum is 32.

The square root of 742478 is about 861.6716311914. The cubic root of 742478 is about 90.5512667008.

Subtracting 742478 from its reverse (874247), we obtain a square (131769 = 363²).

It can be divided in two parts, 74 and 2478, that added together give a palindrome (2552).

The spelling of 742478 in words is "seven hundred forty-two thousand, four hundred seventy-eight".