421052121053 has 8 divisors (see below), whose sum is σ = 435624286680. Its totient is φ = 406483497280.

The previous prime is 421052121037. The next prime is 421052121121. The reversal of 421052121053 is 350121250124.

It can be written as a sum of positive squares in 4 ways, for example, as 18757493764 + 402294627289 = 136958^2 + 634267^2 .

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

It is not a de Polignac number, because 421052121053 - 2⁴ = 421052121037 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 (421052121023) 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, 642458 + ... + 1120203.

It is an arithmetic number, because the mean of its divisors is an integer number (54453035835).

Almost surely, 2^421052121053 is an apocalyptic number.

It is an amenable number.

421052121053 is a deficient number, since it is larger than the sum of its proper divisors (14572165627).

421052121053 is a wasteful number, since it uses less digits than its factorization.

421052121053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770927.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 421052121053 its reverse (350121250124), we get a palindrome (771173371177).

The spelling of 421052121053 in words is "four hundred twenty-one billion, fifty-two million, one hundred twenty-one thousand, fifty-three".