154012005421 has 8 divisors (see below), whose sum is σ = 159312443360. Its totient is φ = 148771459728.

The previous prime is 154012005409. The next prime is 154012005431. The reversal of 154012005421 is 124500210451.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154012005421 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 (154012005431) 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, 14967831 + ... + 14978116.

It is an arithmetic number, because the mean of its divisors is an integer number (19914055420).

Almost surely, 2^154012005421 is an apocalyptic number.

It is an amenable number.

154012005421 is a deficient number, since it is larger than the sum of its proper divisors (5300437939).

154012005421 is a wasteful number, since it uses less digits than its factorization.

154012005421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29946123.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 154012005421 its reverse (124500210451), we get a palindrome (278512215872).

The spelling of 154012005421 in words is "one hundred fifty-four billion, twelve million, five thousand, four hundred twenty-one".