193971142 has 4 divisors (see below), whose sum is σ = 290956716. Its totient is φ = 96985570.

The previous prime is 193971137. The next prime is 193971161. The reversal of 193971142 is 241179391.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48492784 + ... + 48492787.

It is an arithmetic number, because the mean of its divisors is an integer number (72739179).

Almost surely, 2^193971142 is an apocalyptic number.

193971142 is a deficient number, since it is larger than the sum of its proper divisors (96985574).

193971142 is an equidigital number, since it uses as much as digits as its factorization.

193971142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96985573.

The product of its digits is 13608, while the sum is 37.

The square root of 193971142 is about 13927.3522968294. The cubic root of 193971142 is about 578.8673316903.

The spelling of 193971142 in words is "one hundred ninety-three million, nine hundred seventy-one thousand, one hundred forty-two".