135423154 has 4 divisors (see below), whose sum is σ = 203134734. Its totient is φ = 67711576.

The previous prime is 135423151. The next prime is 135423161. The reversal of 135423154 is 451324531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 73564929 + 61858225 = 8577^2 + 7865^2 .

It is not an unprimeable number, because it can be changed into a prime (135423151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33855787 + ... + 33855790.

Almost surely, 2^135423154 is an apocalyptic number.

135423154 is a deficient number, since it is larger than the sum of its proper divisors (67711580).

135423154 is an equidigital number, since it uses as much as digits as its factorization.

135423154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67711579.

The product of its digits is 7200, while the sum is 28.

The square root of 135423154 is about 11637.1454403561. The cubic root of 135423154 is about 513.5282124904.

Adding to 135423154 its reverse (451324531), we get a palindrome (586747685).

The spelling of 135423154 in words is "one hundred thirty-five million, four hundred twenty-three thousand, one hundred fifty-four".