357781242 has 128 divisors (see below), whose sum is σ = 922521600. Its totient is φ = 91869120.

The previous prime is 357781219. The next prime is 357781243. The reversal of 357781242 is 242187753.

357781242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 357781242.

It is not an unprimeable number, because it can be changed into a prime (357781243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1150267 + ... + 1150577.

It is an arithmetic number, because the mean of its divisors is an integer number (7207200).

Almost surely, 2^357781242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 357781242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (461260800).

357781242 is an abundant number, since it is smaller than the sum of its proper divisors (564740358).

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

357781242 is a wasteful number, since it uses less digits than its factorization.

357781242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 379 counting only the distinct ones).

The product of its digits is 94080, while the sum is 39.

The square root of 357781242 is about 18915.1061852690. The cubic root of 357781242 is about 709.9141878701.

The spelling of 357781242 in words is "three hundred fifty-seven million, seven hundred eighty-one thousand, two hundred forty-two".