135216902 has 4 divisors (see below), whose sum is σ = 202825356. Its totient is φ = 67608450.

The previous prime is 135216889. The next prime is 135216923. The reversal of 135216902 is 209612531.

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

It is a super-2 number, since 2×135216902² = 36567221172955208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 33804224 + ... + 33804227.

It is an arithmetic number, because the mean of its divisors is an integer number (50706339).

Almost surely, 2^135216902 is an apocalyptic number.

135216902 is a deficient number, since it is larger than the sum of its proper divisors (67608454).

135216902 is an equidigital number, since it uses as much as digits as its factorization.

135216902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67608453.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 135216902 is about 11628.2802683802. The cubic root of 135216902 is about 513.2673756638.

The spelling of 135216902 in words is "one hundred thirty-five million, two hundred sixteen thousand, nine hundred two".