742490 has 16 divisors (see below), whose sum is σ = 1527552. Its totient is φ = 254544.

The previous prime is 742457. The next prime is 742499. The reversal of 742490 is 94247.

742490 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 (742499) 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, 5234 + ... + 5373.

It is an arithmetic number, because the mean of its divisors is an integer number (95472).

2⁷⁴²⁴⁹⁰ is an apocalyptic number.

742490 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

742490 is an abundant number, since it is smaller than the sum of its proper divisors (785062).

It is a weird number, because it is abundant, but not a pseudoperfect number.

742490 is a wasteful number, since it uses less digits than its factorization.

742490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10621.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 742490 is about 861.6785943726. The cubic root of 742490 is about 90.5517545309.

The spelling of 742490 in words is "seven hundred forty-two thousand, four hundred ninety".