135542619 has 8 divisors (see below), whose sum is σ = 200803920. Its totient is φ = 90361728.

The previous prime is 135542609. The next prime is 135542623. The reversal of 135542619 is 916245531.

135542619 is a `hidden beast` number, since 1 + 35 + 5 + 4 + 2 + 619 = 666.

It is not a de Polignac number, because 135542619 - 2⁵ = 135542587 is a prime.

It is a super-2 number, since 2×135542619² = 36743603130758322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135542609) 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 7 ways as a sum of consecutive naturals, for example, 2510022 + ... + 2510075.

It is an arithmetic number, because the mean of its divisors is an integer number (25100490).

Almost surely, 2^135542619 is an apocalyptic number.

135542619 is a deficient number, since it is larger than the sum of its proper divisors (65261301).

135542619 is an equidigital number, since it uses as much as digits as its factorization.

135542619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5020106 (or 5020100 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 135542619 is about 11642.2772256977. The cubic root of 135542619 is about 513.6791729309.

It can be divided in two parts, 135542 and 619, that added together give a square (136161 = 369²).

The spelling of 135542619 in words is "one hundred thirty-five million, five hundred forty-two thousand, six hundred nineteen".