421011641 has 8 divisors (see below), whose sum is σ = 432944640. Its totient is φ = 409107888.

The previous prime is 421011623. The next prime is 421011649. The reversal of 421011641 is 146110124.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421011641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421011649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23720 + ... + 37478.

It is an arithmetic number, because the mean of its divisors is an integer number (54118080).

Almost surely, 2^421011641 is an apocalyptic number.

It is an amenable number.

421011641 is a deficient number, since it is larger than the sum of its proper divisors (11932999).

421011641 is a wasteful number, since it uses less digits than its factorization.

421011641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14623.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 421011641 is about 20518.5682005349. The cubic root of 421011641 is about 749.4880304476.

Adding to 421011641 its reverse (146110124), we get a palindrome (567121765).

It can be divided in two parts, 4210 and 11641, that added together give a palindrome (15851).

The spelling of 421011641 in words is "four hundred twenty-one million, eleven thousand, six hundred forty-one".