219435942 has 32 divisors (see below), whose sum is σ = 479343744. Its totient is φ = 66416000.

The previous prime is 219435901. The next prime is 219435947. The reversal of 219435942 is 249534912.

It is a self number, because there is not a number n which added to its sum of digits gives 219435942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219435947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76942 + ... + 79742.

It is an arithmetic number, because the mean of its divisors is an integer number (14979492).

Almost surely, 2^219435942 is an apocalyptic number.

219435942 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

219435942 is an abundant number, since it is smaller than the sum of its proper divisors (259907802).

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

219435942 is a wasteful number, since it uses less digits than its factorization.

219435942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4004.

The product of its digits is 77760, while the sum is 39.

The square root of 219435942 is about 14813.3703794916. The cubic root of 219435942 is about 603.1647061548.

The spelling of 219435942 in words is "two hundred nineteen million, four hundred thirty-five thousand, nine hundred forty-two".