187156013042 has 4 divisors (see below), whose sum is σ = 280734019566. Its totient is φ = 93578006520.

The previous prime is 187156013027. The next prime is 187156013053. The reversal of 187156013042 is 240310651781.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240310651781 = 17 ⋅14135920693.

It can be written as a sum of positive squares in only one way, i.e., 177408597601 + 9747415441 = 421199^2 + 98729^2 .

It is a junction number, because it is equal to n+sod(n) for n = 187156012987 and 187156013005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46789003259 + ... + 46789003262.

Almost surely, 2^187156013042 is an apocalyptic number.

187156013042 is a deficient number, since it is larger than the sum of its proper divisors (93578006524).

187156013042 is an equidigital number, since it uses as much as digits as its factorization.

187156013042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93578006523.

The product of its (nonzero) digits is 40320, while the sum is 38.

The spelling of 187156013042 in words is "one hundred eighty-seven billion, one hundred fifty-six million, thirteen thousand, forty-two".