135423645 has 16 divisors (see below), whose sum is σ = 247632000. Its totient is φ = 61907904.

The previous prime is 135423619. The next prime is 135423653. The reversal of 135423645 is 546324531.

It is not a de Polignac number, because 135423645 - 2⁸ = 135423389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 644770 + ... + 644979.

It is an arithmetic number, because the mean of its divisors is an integer number (15477000).

Almost surely, 2^135423645 is an apocalyptic number.

135423645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

135423645 is a deficient number, since it is larger than the sum of its proper divisors (112208355).

135423645 is a wasteful number, since it uses less digits than its factorization.

135423645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289764.

The product of its digits is 43200, while the sum is 33.

The square root of 135423645 is about 11637.1665365758. The cubic root of 135423645 is about 513.5288331180.

The spelling of 135423645 in words is "one hundred thirty-five million, four hundred twenty-three thousand, six hundred forty-five".