156870134 has 4 divisors (see below), whose sum is σ = 235305204. Its totient is φ = 78435066.

The previous prime is 156870127. The next prime is 156870139. The reversal of 156870134 is 431078651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 431078651 = 73 ⋅5905187.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 156870094 and 156870103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156870139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39217532 + ... + 39217535.

It is an arithmetic number, because the mean of its divisors is an integer number (58826301).

Almost surely, 2^156870134 is an apocalyptic number.

156870134 is a deficient number, since it is larger than the sum of its proper divisors (78435070).

156870134 is an equidigital number, since it uses as much as digits as its factorization.

156870134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78435069.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 156870134 is about 12524.7807964850. The cubic root of 156870134 is about 539.3202856140.

The spelling of 156870134 in words is "one hundred fifty-six million, eight hundred seventy thousand, one hundred thirty-four".