146642421 has 8 divisors (see below), whose sum is σ = 195771744. Its totient is φ = 97637360.

The previous prime is 146642381. The next prime is 146642429. The reversal of 146642421 is 124246641.

It is a happy number.

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 146642421 - 2¹⁵ = 146609653 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146642429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28275 + ... + 33056.

It is an arithmetic number, because the mean of its divisors is an integer number (24471468).

Almost surely, 2^146642421 is an apocalyptic number.

It is an amenable number.

146642421 is a deficient number, since it is larger than the sum of its proper divisors (49129323).

146642421 is an equidigital number, since it uses as much as digits as its factorization.

146642421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62131.

The product of its digits is 9216, while the sum is 30.

The square root of 146642421 is about 12109.6003649997. The cubic root of 146642421 is about 527.3349315426.

The spelling of 146642421 in words is "one hundred forty-six million, six hundred forty-two thousand, four hundred twenty-one".