421154023441 has 8 divisors (see below), whose sum is σ = 430136853120. Its totient is φ = 412172114928.

The previous prime is 421154023421. The next prime is 421154023453. The reversal of 421154023441 is 144320451124.

It is a happy number.

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-421154023441 is a prime.

It is a super-2 number, since 2×421154023441² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421154023421) 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, 736690 + ... + 1176868.

It is an arithmetic number, because the mean of its divisors is an integer number (53767106640).

Almost surely, 2^421154023441 is an apocalyptic number.

It is an amenable number.

421154023441 is a deficient number, since it is larger than the sum of its proper divisors (8982829679).

421154023441 is a wasteful number, since it uses less digits than its factorization.

421154023441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460583.

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 421154023441 its reverse (144320451124), we get a palindrome (565474474565).

The spelling of 421154023441 in words is "four hundred twenty-one billion, one hundred fifty-four million, twenty-three thousand, four hundred forty-one".