421501121241 has 32 divisors (see below), whose sum is σ = 596268794880. Its totient is φ = 264102696000.

The previous prime is 421501121231. The next prime is 421501121263. The reversal of 421501121241 is 142121105124.

It is a de Polignac number, because none of the positive numbers 2^k-421501121241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421501121201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37127716 + ... + 37139066.

It is an arithmetic number, because the mean of its divisors is an integer number (18633399840).

Almost surely, 2^421501121241 is an apocalyptic number.

It is an amenable number.

421501121241 is a deficient number, since it is larger than the sum of its proper divisors (174767673639).

421501121241 is a wasteful number, since it uses less digits than its factorization.

421501121241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16477.

The product of its (nonzero) digits is 640, while the sum is 24.

Adding to 421501121241 its reverse (142121105124), we get a palindrome (563622226365).

The spelling of 421501121241 in words is "four hundred twenty-one billion, five hundred one million, one hundred twenty-one thousand, two hundred forty-one".