158140139 has 4 divisors (see below), whose sum is σ = 158177880. Its totient is φ = 158102400.

The previous prime is 158140127. The next prime is 158140141. The reversal of 158140139 is 931041851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931041851 = 797 ⋅1168183.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158140139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158140189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11669 + ... + 21270.

It is an arithmetic number, because the mean of its divisors is an integer number (39544470).

Almost surely, 2^158140139 is an apocalyptic number.

158140139 is a deficient number, since it is larger than the sum of its proper divisors (37741).

158140139 is an equidigital number, since it uses as much as digits as its factorization.

158140139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37740.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 158140139 is about 12575.3782845686. The cubic root of 158140139 is about 540.7718033128.

The spelling of 158140139 in words is "one hundred fifty-eight million, one hundred forty thousand, one hundred thirty-nine".