21300142154 has 8 divisors (see below), whose sum is σ = 32022994080. Its totient is φ = 10625810796.

The previous prime is 21300142141. The next prime is 21300142207. The reversal of 21300142154 is 45124100312.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12129044 + ... + 12130799.

It is an arithmetic number, because the mean of its divisors is an integer number (4002874260).

Almost surely, 2^21300142154 is an apocalyptic number.

21300142154 is a deficient number, since it is larger than the sum of its proper divisors (10722851926).

21300142154 is a wasteful number, since it uses less digits than its factorization.

21300142154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24260284.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 21300142154 its reverse (45124100312), we get a palindrome (66424242466).

The spelling of 21300142154 in words is "twenty-one billion, three hundred million, one hundred forty-two thousand, one hundred fifty-four".