134642481 has 4 divisors (see below), whose sum is σ = 179523312. Its totient is φ = 89761652.

The previous prime is 134642477. The next prime is 134642491. The reversal of 134642481 is 184246431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 134642481 - 2² = 134642477 is a prime.

It is a super-2 number, since 2×134642481² = 36257195379670722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (134642471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22440411 + ... + 22440416.

It is an arithmetic number, because the mean of its divisors is an integer number (44880828).

Almost surely, 2^134642481 is an apocalyptic number.

It is an amenable number.

134642481 is a deficient number, since it is larger than the sum of its proper divisors (44880831).

134642481 is an equidigital number, since it uses as much as digits as its factorization.

134642481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44880830.

The product of its digits is 18432, while the sum is 33.

The square root of 134642481 is about 11603.5546708756. The cubic root of 134642481 is about 512.5395326237.

The spelling of 134642481 in words is "one hundred thirty-four million, six hundred forty-two thousand, four hundred eighty-one".