421455985442 has 8 divisors (see below), whose sum is σ = 632206175232. Its totient is φ = 210720593700.

The previous prime is 421455985427. The next prime is 421455985471. The reversal of 421455985442 is 244589554124.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3628034 + ... + 3742397.

It is an arithmetic number, because the mean of its divisors is an integer number (79025771904).

Almost surely, 2^421455985442 is an apocalyptic number.

421455985442 is a deficient number, since it is larger than the sum of its proper divisors (210750189790).

421455985442 is a wasteful number, since it uses less digits than its factorization.

421455985442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7399024.

The product of its digits is 9216000, while the sum is 53.

The spelling of 421455985442 in words is "four hundred twenty-one billion, four hundred fifty-five million, nine hundred eighty-five thousand, four hundred forty-two".