742426 has 4 divisors (see below), whose sum is σ = 1113642. Its totient is φ = 371212.

The previous prime is 742409. The next prime is 742439. The reversal of 742426 is 624247.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 724201 + 18225 = 851^2 + 135^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 742426.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 185605 + ... + 185608.

2⁷⁴²⁴²⁶ is an apocalyptic number.

742426 is a deficient number, since it is larger than the sum of its proper divisors (371216).

742426 is a wasteful number, since it uses less digits than its factorization.

742426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371215.

The product of its digits is 2688, while the sum is 25.

The square root of 742426 is about 861.6414567557. The cubic root of 742426 is about 90.5491527096.

It can be divided in two parts, 74 and 2426, that added together give a square (2500 = 50²).

The spelling of 742426 in words is "seven hundred forty-two thousand, four hundred twenty-six".