146421331 has 8 divisors (see below), whose sum is σ = 169836800. Its totient is φ = 123630408.

The previous prime is 146421329. The next prime is 146421337. The reversal of 146421331 is 133124641.

146421331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 146421331 - 2¹ = 146421329 is a prime.

It is a super-2 number, since 2×146421331² = 42878412343623122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 146421296 and 146421305.

It is not an unprimeable number, because it can be changed into a prime (146421337) 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, 155631 + ... + 156568.

It is an arithmetic number, because the mean of its divisors is an integer number (21229600).

Almost surely, 2^146421331 is an apocalyptic number.

146421331 is a deficient number, since it is larger than the sum of its proper divisors (23415469).

146421331 is an equidigital number, since it uses as much as digits as its factorization.

146421331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312273.

The product of its digits is 1728, while the sum is 25.

The square root of 146421331 is about 12100.4682140816. The cubic root of 146421331 is about 527.0697806150.

Adding to 146421331 its reverse (133124641), we get a palindrome (279545972).

The spelling of 146421331 in words is "one hundred forty-six million, four hundred twenty-one thousand, three hundred thirty-one".