742243740 has 192 divisors, whose sum is σ = 2554675200. Its totient is φ = 157227264.

The previous prime is 742243739. The next prime is 742243811. The reversal of 742243740 is 47342247.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 374071 + ... + 376049.

It is an arithmetic number, because the mean of its divisors is an integer number (13305600).

Almost surely, 2^742243740 is an apocalyptic number.

742243740 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 742243740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1277337600).

742243740 is an abundant number, since it is smaller than the sum of its proper divisors (1812431460).

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

742243740 is a wasteful number, since it uses less digits than its factorization.

742243740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064 (or 2062 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 33.

The square root of 742243740 is about 27244.1505648460. The cubic root of 742243740 is about 905.4174239119.

Adding to 742243740 its reverse (47342247), we get a palindrome (789585987).

The spelling of 742243740 in words is "seven hundred forty-two million, two hundred forty-three thousand, seven hundred forty".