105120154421 has 8 divisors (see below), whose sum is σ = 105719410944. Its totient is φ = 104522040000.

The previous prime is 105120154417. The next prime is 105120154423. The reversal of 105120154421 is 124451021501.

It is a happy number.

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 105120154421 - 2² = 105120154417 is a prime.

It is a super-2 number, since 2×105120154421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105120154423) 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, 100580 + ... + 469421.

It is an arithmetic number, because the mean of its divisors is an integer number (13214926368).

Almost surely, 2^105120154421 is an apocalyptic number.

It is an amenable number.

105120154421 is a deficient number, since it is larger than the sum of its proper divisors (599256523).

105120154421 is an equidigital number, since it uses as much as digits as its factorization.

105120154421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571051.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 105120154421 its reverse (124451021501), we get a palindrome (229571175922).

The spelling of 105120154421 in words is "one hundred five billion, one hundred twenty million, one hundred fifty-four thousand, four hundred twenty-one".