135021790 has 16 divisors (see below), whose sum is σ = 255831120. Its totient is φ = 51166080.

The previous prime is 135021787. The next prime is 135021797. The reversal of 135021790 is 97120531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135021797) 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 7 ways as a sum of consecutive naturals, for example, 355131 + ... + 355510.

It is an arithmetic number, because the mean of its divisors is an integer number (15989445).

Almost surely, 2^135021790 is an apocalyptic number.

135021790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135021790 is a deficient number, since it is larger than the sum of its proper divisors (120809330).

135021790 is a wasteful number, since it uses less digits than its factorization.

135021790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710667.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 135021790 is about 11619.8876930889. The cubic root of 135021790 is about 513.0203827966.

The spelling of 135021790 in words is "one hundred thirty-five million, twenty-one thousand, seven hundred ninety".