421087141 has 4 divisors (see below), whose sum is σ = 426855532. Its totient is φ = 415318752.

The previous prime is 421087133. The next prime is 421087157. The reversal of 421087141 is 141780124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81974916 + 339112225 = 9054^2 + 18415^2 .

It is a cyclic number.

It is not a de Polignac number, because 421087141 - 2³ = 421087133 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 (421087111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2884086 + ... + 2884231.

It is an arithmetic number, because the mean of its divisors is an integer number (106713883).

Almost surely, 2^421087141 is an apocalyptic number.

It is an amenable number.

421087141 is a deficient number, since it is larger than the sum of its proper divisors (5768391).

421087141 is an equidigital number, since it uses as much as digits as its factorization.

421087141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5768390.

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 421087141 is about 20520.4079150489. The cubic root of 421087141 is about 749.5328296555.

The spelling of 421087141 in words is "four hundred twenty-one million, eighty-seven thousand, one hundred forty-one".