135520940 has 24 divisors (see below), whose sum is σ = 301335552. Its totient is φ = 51019520.

The previous prime is 135520937. The next prime is 135520943. The reversal of 135520940 is 49025531.

It is an interprime number because it is at equal distance from previous prime (135520937) and next prime (135520943).

It is not an unprimeable number, because it can be changed into a prime (135520943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198956 + ... + 199635.

It is an arithmetic number, because the mean of its divisors is an integer number (12555648).

Almost surely, 2^135520940 is an apocalyptic number.

135520940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135520940 is an abundant number, since it is smaller than the sum of its proper divisors (165814612).

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

135520940 is a wasteful number, since it uses less digits than its factorization.

135520940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398617 (or 398615 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 135520940 is about 11641.3461420920. The cubic root of 135520940 is about 513.6517851257.

The spelling of 135520940 in words is "one hundred thirty-five million, five hundred twenty thousand, nine hundred forty".