27042520 has 32 divisors (see below), whose sum is σ = 61848720. Its totient is φ = 10638720.

The previous prime is 27042511. The next prime is 27042527. The reversal of 27042520 is 2524072.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 27042491 and 27042500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27042527) 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, 3102 + ... + 7981.

Almost surely, 2^27042520 is an apocalyptic number.

27042520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27042520 is an abundant number, since it is smaller than the sum of its proper divisors (34806200).

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

27042520 is a wasteful number, since it uses less digits than its factorization.

27042520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11155 (or 11151 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 27042520 is about 5200.2423020471. The cubic root of 27042520 is about 300.1573988857.

Adding to 27042520 its reverse (2524072), we get a palindrome (29566592).

The spelling of 27042520 in words is "twenty-seven million, forty-two thousand, five hundred twenty".