135420040 has 32 divisors (see below), whose sum is σ = 348223680. Its totient is φ = 46429632.

The previous prime is 135420031. The next prime is 135420041. The reversal of 135420040 is 40024531.

It is not an unprimeable number, because it can be changed into a prime (135420041) 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, 241542 + ... + 242101.

It is an arithmetic number, because the mean of its divisors is an integer number (10881990).

Almost surely, 2^135420040 is an apocalyptic number.

135420040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135420040 is an abundant number, since it is smaller than the sum of its proper divisors (212803640).

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

135420040 is a wasteful number, since it uses less digits than its factorization.

135420040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483661 (or 483657 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 135420040 is about 11637.0116438886. The cubic root of 135420040 is about 513.5242763365.

Adding to 135420040 its reverse (40024531), we get a palindrome (175444571).

The spelling of 135420040 in words is "one hundred thirty-five million, four hundred twenty thousand, forty".