421144440102 has 32 divisors (see below), whose sum is σ = 935916364800. Its totient is φ = 140375505384.

The previous prime is 421144440097. The next prime is 421144440127. The reversal of 421144440102 is 201044441124.

It is a happy number.

421144440102 is a `hidden beast` number, since 4 + 2 + 114 + 4 + 440 + 102 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1220899 + ... + 1527377.

It is an arithmetic number, because the mean of its divisors is an integer number (29247386400).

Almost surely, 2^421144440102 is an apocalyptic number.

421144440102 is an abundant number, since it is smaller than the sum of its proper divisors (514771924698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421144440102 is a wasteful number, since it uses less digits than its factorization.

421144440102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331937 (or 331931 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 421144440102 its reverse (201044441124), we get a palindrome (622188881226).

The spelling of 421144440102 in words is "four hundred twenty-one billion, one hundred forty-four million, four hundred forty thousand, one hundred two".