146322421 has 16 divisors (see below), whose sum is σ = 174772224. Its totient is φ = 119884464.

The previous prime is 146322413. The next prime is 146322433. The reversal of 146322421 is 124223641.

It is a happy number.

It is not a de Polignac number, because 146322421 - 2³ = 146322413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146322461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8976 + ... + 19318.

It is an arithmetic number, because the mean of its divisors is an integer number (10923264).

Almost surely, 2^146322421 is an apocalyptic number.

It is an amenable number.

146322421 is a deficient number, since it is larger than the sum of its proper divisors (28449803).

146322421 is a wasteful number, since it uses less digits than its factorization.

146322421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10440.

The product of its digits is 2304, while the sum is 25.

The square root of 146322421 is about 12096.3804917008. The cubic root of 146322421 is about 526.9510724668.

The spelling of 146322421 in words is "one hundred forty-six million, three hundred twenty-two thousand, four hundred twenty-one".