154421433 has 12 divisors (see below), whose sum is σ = 230745060. Its totient is φ = 99397536.

The previous prime is 154421429. The next prime is 154421441. The reversal of 154421433 is 334124451.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 124478649 + 29942784 = 11157^2 + 5472^2 .

It is not a de Polignac number, because 154421433 - 2² = 154421429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 154421397 and 154421406.

It is not an unprimeable number, because it can be changed into a prime (154421453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 295566 + ... + 296087.

It is an arithmetic number, because the mean of its divisors is an integer number (19228755).

Almost surely, 2^154421433 is an apocalyptic number.

It is an amenable number.

154421433 is a deficient number, since it is larger than the sum of its proper divisors (76323627).

154421433 is a wasteful number, since it uses less digits than its factorization.

154421433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591688 (or 591685 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 154421433 is about 12426.6420645322. The cubic root of 154421433 is about 536.4993409058.

Adding to 154421433 its reverse (334124451), we get a palindrome (488545884).

The spelling of 154421433 in words is "one hundred fifty-four million, four hundred twenty-one thousand, four hundred thirty-three".