154542400321 has 4 divisors (see below), whose sum is σ = 154750398912. Its totient is φ = 154334401732.

The previous prime is 154542400283. The next prime is 154542400339. The reversal of 154542400321 is 123004245451.

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 a de Polignac number, because none of the positive numbers 2^k-154542400321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154542430321) 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, 103998181 + ... + 103999666.

It is an arithmetic number, because the mean of its divisors is an integer number (38687599728).

Almost surely, 2^154542400321 is an apocalyptic number.

It is an amenable number.

154542400321 is a deficient number, since it is larger than the sum of its proper divisors (207998591).

154542400321 is an equidigital number, since it uses as much as digits as its factorization.

154542400321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207998590.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 154542400321 its reverse (123004245451), we get a palindrome (277546645772).

The spelling of 154542400321 in words is "one hundred fifty-four billion, five hundred forty-two million, four hundred thousand, three hundred twenty-one".