135149274 has 72 divisors (see below), whose sum is σ = 326391156. Its totient is φ = 40176000.

The previous prime is 135149249. The next prime is 135149279. The reversal of 135149274 is 472941531.

It can be written as a sum of positive squares in 2 ways, for example, as 135140625 + 8649 = 11625^2 + 93^2 .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135149279) 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 35 ways as a sum of consecutive naturals, for example, 224574 + ... + 225174.

Almost surely, 2^135149274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135149274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163195578).

135149274 is an abundant number, since it is smaller than the sum of its proper divisors (191241882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135149274 is a wasteful number, since it uses less digits than its factorization.

135149274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684 (or 650 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 135149274 is about 11625.3719940482. The cubic root of 135149274 is about 513.1817920963.

It can be divided in two parts, 1351 and 49274, that added together give a 4-th power (50625 = 15⁴).

The spelling of 135149274 in words is "one hundred thirty-five million, one hundred forty-nine thousand, two hundred seventy-four".