154413021 has 32 divisors (see below), whose sum is σ = 241056000. Its totient is φ = 86100480.

The previous prime is 154412983. The next prime is 154413029. The reversal of 154413021 is 120314451.

It is not a de Polignac number, because 154413021 - 2⁹ = 154412509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154413029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190465 + ... + 191273.

It is an arithmetic number, because the mean of its divisors is an integer number (7533000).

Almost surely, 2^154413021 is an apocalyptic number.

It is an amenable number.

154413021 is a deficient number, since it is larger than the sum of its proper divisors (86642979).

154413021 is a wasteful number, since it uses less digits than its factorization.

154413021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 154413021 is about 12426.3035935873. The cubic root of 154413021 is about 536.4895989196.

Adding to 154413021 its reverse (120314451), we get a palindrome (274727472).

The spelling of 154413021 in words is "one hundred fifty-four million, four hundred thirteen thousand, twenty-one".