135219946 has 4 divisors (see below), whose sum is σ = 202829922. Its totient is φ = 67609972.

The previous prime is 135219943. The next prime is 135219949. The reversal of 135219946 is 649912531.

135219946 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 649912531 = 20123 ⋅32297.

It is an interprime number because it is at equal distance from previous prime (135219943) and next prime (135219949).

It can be written as a sum of positive squares in only one way, i.e., 128255625 + 6964321 = 11325^2 + 2639^2 .

It is a junction number, because it is equal to n+sod(n) for n = 135219899 and 135219908.

It is not an unprimeable number, because it can be changed into a prime (135219943) 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 as a sum of consecutive naturals, namely, 33804985 + ... + 33804988.

Almost surely, 2^135219946 is an apocalyptic number.

135219946 is a deficient number, since it is larger than the sum of its proper divisors (67609976).

135219946 is an equidigital number, since it uses as much as digits as its factorization.

135219946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67609975.

The product of its digits is 58320, while the sum is 40.

The square root of 135219946 is about 11628.4111554417. The cubic root of 135219946 is about 513.2712271896.

The spelling of 135219946 in words is "one hundred thirty-five million, two hundred nineteen thousand, nine hundred forty-six".