421040144302 has 4 divisors (see below), whose sum is σ = 631560216456. Its totient is φ = 210520072150.

The previous prime is 421040144269. The next prime is 421040144311. The reversal of 421040144302 is 203441040124.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×421040144302² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105260036074 + ... + 105260036077.

It is an arithmetic number, because the mean of its divisors is an integer number (157890054114).

Almost surely, 2^421040144302 is an apocalyptic number.

421040144302 is a deficient number, since it is larger than the sum of its proper divisors (210520072154).

421040144302 is a wasteful number, since it uses less digits than its factorization.

421040144302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210520072153.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 421040144302 its reverse (203441040124), we get a palindrome (624481184426).

The spelling of 421040144302 in words is "four hundred twenty-one billion, forty million, one hundred forty-four thousand, three hundred two".