136842473 has 4 divisors (see below), whose sum is σ = 136906308. Its totient is φ = 136778640.

The previous prime is 136842437. The next prime is 136842491. The reversal of 136842473 is 374248631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 374248631 = 16067 ⋅23293.

It can be written as a sum of positive squares in 2 ways, for example, as 31225744 + 105616729 = 5588^2 + 10277^2 .

It is a cyclic number.

It is not a de Polignac number, because 136842473 - 2²² = 132648169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136842403) 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, 28586 + ... + 33027.

It is an arithmetic number, because the mean of its divisors is an integer number (34226577).

Almost surely, 2^136842473 is an apocalyptic number.

It is an amenable number.

136842473 is a deficient number, since it is larger than the sum of its proper divisors (63835).

136842473 is an equidigital number, since it uses as much as digits as its factorization.

136842473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63834.

The product of its digits is 96768, while the sum is 38.

The square root of 136842473 is about 11697.9687553011. The cubic root of 136842473 is about 515.3160130432.

It can be divided in two parts, 13 and 6842473, that added together give a palindrome (6842486).

The spelling of 136842473 in words is "one hundred thirty-six million, eight hundred forty-two thousand, four hundred seventy-three".