142940161 has 8 divisors (see below), whose sum is σ = 175926464. Its totient is φ = 113095440.

The previous prime is 142940129. The next prime is 142940167. The reversal of 142940161 is 161049241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142940161 - 2⁵ = 142940129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142940167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785295 + ... + 785476.

It is an arithmetic number, because the mean of its divisors is an integer number (21990808).

Almost surely, 2^142940161 is an apocalyptic number.

It is an amenable number.

142940161 is a deficient number, since it is larger than the sum of its proper divisors (32986303).

142940161 is a wasteful number, since it uses less digits than its factorization.

142940161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570791.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 142940161 is about 11955.7584870221. The cubic root of 142940161 is about 522.8592018869.

The spelling of 142940161 in words is "one hundred forty-two million, nine hundred forty thousand, one hundred sixty-one".