154243530121 has 8 divisors (see below), whose sum is σ = 157647945600. Its totient is φ = 150867367440.

The previous prime is 154243530113. The next prime is 154243530137. The reversal of 154243530121 is 121035342451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 154243530121 - 2³ = 154243530113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154243530191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7052161 + ... + 7073998.

It is an arithmetic number, because the mean of its divisors is an integer number (19705993200).

Almost surely, 2^154243530121 is an apocalyptic number.

It is an amenable number.

154243530121 is a deficient number, since it is larger than the sum of its proper divisors (3404415479).

154243530121 is a wasteful number, since it uses less digits than its factorization.

154243530121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14126399.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 154243530121 its reverse (121035342451), we get a palindrome (275278872572).

The spelling of 154243530121 in words is "one hundred fifty-four billion, two hundred forty-three million, five hundred thirty thousand, one hundred twenty-one".