80135420 has 24 divisors (see below), whose sum is σ = 169954848. Its totient is φ = 31736000.

The previous prime is 80135413. The next prime is 80135437. The reversal of 80135420 is 2453108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17816 + ... + 21855.

It is an arithmetic number, because the mean of its divisors is an integer number (7081452).

Almost surely, 2^80135420 is an apocalyptic number.

It is an amenable number.

80135420 is an abundant number, since it is smaller than the sum of its proper divisors (89819428).

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

80135420 is a wasteful number, since it uses less digits than its factorization.

80135420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39781 (or 39779 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 80135420 is about 8951.8389172281. The cubic root of 80135420 is about 431.1299289051.

Adding to 80135420 its reverse (2453108), we get a palindrome (82588528).

The spelling of 80135420 in words is "eighty million, one hundred thirty-five thousand, four hundred twenty".