350643942 has 48 divisors (see below), whose sum is σ = 837384912. Its totient is φ = 105154560.

The previous prime is 350643913. The next prime is 350643971. The reversal of 350643942 is 249346053.

350643942 is a `hidden beast` number, since 3 + 5 + 0 + 643 + 9 + 4 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (350643913) and next prime (350643971).

It is a super-2 number, since 2×350643942² = 245902348122598728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 350643897 and 350643906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10078 + ... + 28334.

It is an arithmetic number, because the mean of its divisors is an integer number (17445519).

Almost surely, 2^350643942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 350643942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418692456).

350643942 is an abundant number, since it is smaller than the sum of its proper divisors (486740970).

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

350643942 is a wasteful number, since it uses less digits than its factorization.

350643942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18373 (or 18370 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 350643942 is about 18725.4890990863. The cubic root of 350643942 is about 705.1618038154.

Adding to 350643942 its reverse (249346053), we get a palindrome (599989995).

The spelling of 350643942 in words is "three hundred fifty million, six hundred forty-three thousand, nine hundred forty-two".