154053421 has 4 divisors (see below), whose sum is σ = 154783744. Its totient is φ = 153323100.

The previous prime is 154053407. The next prime is 154053437. The reversal of 154053421 is 124350451.

It is a happy number.

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: 124350451 = 37 ⋅3360823.

It is a cyclic number.

It is not a de Polignac number, because 154053421 - 2²¹ = 151956269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154053401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364845 + ... + 365266.

It is an arithmetic number, because the mean of its divisors is an integer number (38695936).

Almost surely, 2^154053421 is an apocalyptic number.

It is an amenable number.

154053421 is a deficient number, since it is larger than the sum of its proper divisors (730323).

154053421 is an equidigital number, since it uses as much as digits as its factorization.

154053421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730322.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 154053421 is about 12411.8258527906. The cubic root of 154053421 is about 536.0728127953.

The spelling of 154053421 in words is "one hundred fifty-four million, fifty-three thousand, four hundred twenty-one".