421203241455 has 32 divisors (see below), whose sum is σ = 679040031168. Its totient is φ = 222937728000.

The previous prime is 421203241451. The next prime is 421203241457. The reversal of 421203241455 is 554142302124.

It is not a de Polignac number, because 421203241455 - 2² = 421203241451 is a prime.

It is a super-2 number, since 2×421203241455² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421203241451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7577865 + ... + 7633245.

It is an arithmetic number, because the mean of its divisors is an integer number (21220000974).

Almost surely, 2^421203241455 is an apocalyptic number.

421203241455 is a deficient number, since it is larger than the sum of its proper divisors (257836789713).

421203241455 is a wasteful number, since it uses less digits than its factorization.

421203241455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59227.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 421203241455 its reverse (554142302124), we get a palindrome (975345543579).

The spelling of 421203241455 in words is "four hundred twenty-one billion, two hundred three million, two hundred forty-one thousand, four hundred fifty-five".