135106920 has 128 divisors (see below), whose sum is σ = 485049600. Its totient is φ = 33253632.

The previous prime is 135106919. The next prime is 135106921. The reversal of 135106920 is 29601531.

It is an interprime number because it is at equal distance from previous prime (135106919) and next prime (135106921).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (135106921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9229 + ... + 18851.

It is an arithmetic number, because the mean of its divisors is an integer number (3789450).

Almost surely, 2^135106920 is an apocalyptic number.

135106920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135106920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242524800).

135106920 is an abundant number, since it is smaller than the sum of its proper divisors (349942680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135106920 is a wasteful number, since it uses less digits than its factorization.

135106920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9656 (or 9646 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 135106920 is about 11623.5502321795. The cubic root of 135106920 is about 513.1281783602.

The spelling of 135106920 in words is "one hundred thirty-five million, one hundred six thousand, nine hundred twenty".