742424 has 32 divisors (see below), whose sum is σ = 1516320. Its totient is φ = 339456.

The previous prime is 742409. The next prime is 742439. The reversal of 742424 is 424247.

742424 = T₂₈₇ + T₂₈₈ + ... + T₃₀₃.

742424 is nontrivially palindromic in base 15.

It is an interprime number because it is at equal distance from previous prime (742409) and next prime (742439).

742424 is an undulating number in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 742424.

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, 7157 + ... + 7259.

It is an arithmetic number, because the mean of its divisors is an integer number (47385).

2⁷⁴²⁴²⁴ is an apocalyptic number.

It is an amenable number.

742424 is an abundant number, since it is smaller than the sum of its proper divisors (773896).

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

742424 is a wasteful number, since it uses less digits than its factorization.

742424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 175 counting only the distinct ones).

The product of its digits is 1792, while the sum is 23.

The square root of 742424 is about 861.6402961793. The cubic root of 742424 is about 90.5490714003.

The spelling of 742424 in words is "seven hundred forty-two thousand, four hundred twenty-four", and thus it is an iban number.