146121249 has 4 divisors (see below), whose sum is σ = 194828336. Its totient is φ = 97414164.

The previous prime is 146121221. The next prime is 146121299. The reversal of 146121249 is 942121641.

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, and also an emirpimes, since its reverse is a distinct semiprime: 942121641 = 3 ⋅314040547.

It is not a de Polignac number, because 146121249 - 2¹³ = 146113057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146121299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24353539 + ... + 24353544.

It is an arithmetic number, because the mean of its divisors is an integer number (48707084).

Almost surely, 2^146121249 is an apocalyptic number.

It is an amenable number.

146121249 is a deficient number, since it is larger than the sum of its proper divisors (48707087).

146121249 is an equidigital number, since it uses as much as digits as its factorization.

146121249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48707086.

The product of its digits is 3456, while the sum is 30.

The square root of 146121249 is about 12088.0622516597. The cubic root of 146121249 is about 526.7094680716.

The spelling of 146121249 in words is "one hundred forty-six million, one hundred twenty-one thousand, two hundred forty-nine".