154141021 has 4 divisors (see below), whose sum is σ = 159113344. Its totient is φ = 149168700.

The previous prime is 154141007. The next prime is 154141063. The reversal of 154141021 is 120141451.

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.

It is a cyclic number.

It is not a de Polignac number, because 154141021 - 2⁷ = 154140893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 154141021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154141121) 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, 2486115 + ... + 2486176.

It is an arithmetic number, because the mean of its divisors is an integer number (39778336).

Almost surely, 2^154141021 is an apocalyptic number.

It is an amenable number.

154141021 is a deficient number, since it is larger than the sum of its proper divisors (4972323).

154141021 is an equidigital number, since it uses as much as digits as its factorization.

154141021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4972322.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 154141021 is about 12415.3542438386. The cubic root of 154141021 is about 536.1744032693.

Adding to 154141021 its reverse (120141451), we get a palindrome (274282472).

The spelling of 154141021 in words is "one hundred fifty-four million, one hundred forty-one thousand, twenty-one".