156142103 has 4 divisors (see below), whose sum is σ = 168153048. Its totient is φ = 144131160.

The previous prime is 156142099. The next prime is 156142121. The reversal of 156142103 is 301241651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301241651 = 7219 ⋅41729.

It is a cyclic number.

It is not a de Polignac number, because 156142103 - 2² = 156142099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156142153) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 6005453 + ... + 6005478.

It is an arithmetic number, because the mean of its divisors is an integer number (42038262).

Almost surely, 2^156142103 is an apocalyptic number.

156142103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

156142103 is a deficient number, since it is larger than the sum of its proper divisors (12010945).

156142103 is a wasteful number, since it uses less digits than its factorization.

156142103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12010944.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 156142103 is about 12495.6833746698. The cubic root of 156142103 is about 538.4846668721.

Adding to 156142103 its reverse (301241651), we get a palindrome (457383754).

The spelling of 156142103 in words is "one hundred fifty-six million, one hundred forty-two thousand, one hundred three".