742040 has 32 divisors (see below), whose sum is σ = 1799280. Its totient is φ = 273792.

The previous prime is 742037. The next prime is 742057. The reversal of 742040 is 40247.

742040 = 54² + 55² + ... + 133².

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 742040.

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, 194 + ... + 1233.

2⁷⁴²⁰⁴⁰ is an apocalyptic number.

It is an amenable number.

742040 is an abundant number, since it is smaller than the sum of its proper divisors (1057240).

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

742040 is a wasteful number, since it uses less digits than its factorization.

742040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451 (or 1447 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 742040 is about 861.4174365544. The cubic root of 742040 is about 90.5334573038.

Adding to 742040 its reverse (40247), we get a palindrome (782287).

The spelling of 742040 in words is "seven hundred forty-two thousand, forty", and thus it is an iban number.