193621042 has 4 divisors (see below), whose sum is σ = 290431566. Its totient is φ = 96810520.

The previous prime is 193621033. The next prime is 193621063. The reversal of 193621042 is 240126391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240126391 = 151 ⋅1590241.

It can be written as a sum of positive squares in only one way, i.e., 191573281 + 2047761 = 13841^2 + 1431^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 193621042.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 48405259 + ... + 48405262.

Almost surely, 2^193621042 is an apocalyptic number.

193621042 is a deficient number, since it is larger than the sum of its proper divisors (96810524).

193621042 is an equidigital number, since it uses as much as digits as its factorization.

193621042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96810523.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 193621042 is about 13914.7778279066. Note that the first 3 decimals coincide. The cubic root of 193621042 is about 578.5188545895.

The spelling of 193621042 in words is "one hundred ninety-three million, six hundred twenty-one thousand, forty-two".