146421466 has 4 divisors (see below), whose sum is σ = 219632202. Its totient is φ = 73210732.

The previous prime is 146421461. The next prime is 146421481. The reversal of 146421466 is 664124641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 664124641 = 293 ⋅2266637.

It can be written as a sum of positive squares in only one way, i.e., 94653441 + 51768025 = 9729^2 + 7195^2 .

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (146421461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36605365 + ... + 36605368.

Almost surely, 2^146421466 is an apocalyptic number.

146421466 is a deficient number, since it is larger than the sum of its proper divisors (73210736).

146421466 is an equidigital number, since it uses as much as digits as its factorization.

146421466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73210735.

The product of its digits is 27648, while the sum is 34.

The square root of 146421466 is about 12100.4737923769. The cubic root of 146421466 is about 527.0699426005.

The spelling of 146421466 in words is "one hundred forty-six million, four hundred twenty-one thousand, four hundred sixty-six".