154043421 has 16 divisors (see below), whose sum is σ = 235158144. Its totient is φ = 87865344.

The previous prime is 154043419. The next prime is 154043423. The reversal of 154043421 is 124340451.

It is an interprime number because it is at equal distance from previous prime (154043419) and next prime (154043423).

It is not a de Polignac number, because 154043421 - 2¹ = 154043419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 154043391 and 154043400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154043423) 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, 5761 + ... + 18473.

It is an arithmetic number, because the mean of its divisors is an integer number (14697384).

Almost surely, 2^154043421 is an apocalyptic number.

It is an amenable number.

154043421 is a deficient number, since it is larger than the sum of its proper divisors (81114723).

154043421 is a wasteful number, since it uses less digits than its factorization.

154043421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13300.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 154043421 is about 12411.4230046357. The cubic root of 154043421 is about 536.0612132603.

Adding to 154043421 its reverse (124340451), we get a palindrome (278383872).

The spelling of 154043421 in words is "one hundred fifty-four million, forty-three thousand, four hundred twenty-one".