146400081 has 4 divisors (see below), whose sum is σ = 195200112. Its totient is φ = 97600052.

The previous prime is 146400077. The next prime is 146400103. The reversal of 146400081 is 180004641.

146400081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 146400081 - 2² = 146400077 is a prime.

It is a super-2 number, since 2×146400081² = 42865967433613122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (146400031) 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, 24400011 + ... + 24400016.

It is an arithmetic number, because the mean of its divisors is an integer number (48800028).

Almost surely, 2^146400081 is an apocalyptic number.

It is an amenable number.

146400081 is a deficient number, since it is larger than the sum of its proper divisors (48800031).

146400081 is an equidigital number, since it uses as much as digits as its factorization.

146400081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48800030.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 146400081 is about 12099.5901170246. The cubic root of 146400081 is about 527.0442816556.

The spelling of 146400081 in words is "one hundred forty-six million, four hundred thousand, eighty-one".