421052121054 has 28 divisors (see below), whose sum is σ = 946934094456. Its totient is φ = 140350706532.

The previous prime is 421052121037. The next prime is 421052121121. The reversal of 421052121054 is 450121250124.

It is a happy number.

421052121054 is a `hidden beast` number, since 421 + 0 + 5 + 21 + 210 + 5 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 144392274 + ... + 144395189.

It is an arithmetic number, because the mean of its divisors is an integer number (33819074802).

Almost surely, 2^421052121054 is an apocalyptic number.

421052121054 is an abundant number, since it is smaller than the sum of its proper divisors (525881973402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421052121054 is an equidigital number, since it uses as much as digits as its factorization.

421052121054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288787483 (or 288787468 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

Adding to 421052121054 its reverse (450121250124), we get a palindrome (871173371178).

The spelling of 421052121054 in words is "four hundred twenty-one billion, fifty-two million, one hundred twenty-one thousand, fifty-four".