156142673 has 2 divisors, whose sum is σ = 156142674. Its totient is φ = 156142672.

The previous prime is 156142643. The next prime is 156142687. The reversal of 156142673 is 376241651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143233024 + 12909649 = 11968^2 + 3593^2 .

It is an emirp because it is prime and its reverse (376241651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 156142673 - 2²⁰ = 155094097 is a prime.

It is not a weakly prime, because it can be changed into another prime (156142633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78071336 + 78071337.

It is an arithmetic number, because the mean of its divisors is an integer number (78071337).

Almost surely, 2^156142673 is an apocalyptic number.

It is an amenable number.

156142673 is a deficient number, since it is larger than the sum of its proper divisors (1).

156142673 is an equidigital number, since it uses as much as digits as its factorization.

156142673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 35.

The square root of 156142673 is about 12495.7061825253. The cubic root of 156142673 is about 538.4853221211.

The spelling of 156142673 in words is "one hundred fifty-six million, one hundred forty-two thousand, six hundred seventy-three".