742725239490 has 768 divisors, whose sum is σ = 2323244851200. Its totient is φ = 162954215424.

The previous prime is 742725239489. The next prime is 742725239497. The reversal of 742725239490 is 94932527247.

It is a happy number.

742725239490 is a `hidden beast` number, since 7 + 4 + 2 + 72 + 52 + 39 + 490 = 666.

It is not an unprimeable number, because it can be changed into a prime (742725239497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 6572789674 + ... + 6572789786.

It is an arithmetic number, because the mean of its divisors is an integer number (3025058400).

Almost surely, 2^742725239490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 742725239490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1161622425600).

742725239490 is an abundant number, since it is smaller than the sum of its proper divisors (1580519611710).

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

742725239490 is a wasteful number, since it uses less digits than its factorization.

742725239490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 54.

The spelling of 742725239490 in words is "seven hundred forty-two billion, seven hundred twenty-five million, two hundred thirty-nine thousand, four hundred ninety".