135542990 has 24 divisors (see below), whose sum is σ = 268175880. Its totient is φ = 49287920.

The previous prime is 135542977. The next prime is 135542993. The reversal of 135542990 is 99245531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135542993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54800 + ... + 57219.

It is an arithmetic number, because the mean of its divisors is an integer number (11173995).

Almost surely, 2^135542990 is an apocalyptic number.

135542990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135542990 is a deficient number, since it is larger than the sum of its proper divisors (132632890).

135542990 is a wasteful number, since it uses less digits than its factorization.

135542990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112048 (or 112037 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 135542990 is about 11642.2931589958. The cubic root of 135542990 is about 513.6796416022.

The spelling of 135542990 in words is "one hundred thirty-five million, five hundred forty-two thousand, nine hundred ninety".