421101042 has 16 divisors (see below), whose sum is σ = 842429280. Its totient is φ = 140329152.

The previous prime is 421101041. The next prime is 421101049. The reversal of 421101042 is 240101124.

It is not an unprimeable number, because it can be changed into a prime (421101041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23418 + ... + 37290.

It is an arithmetic number, because the mean of its divisors is an integer number (52651830).

Almost surely, 2^421101042 is an apocalyptic number.

421101042 is an abundant number, since it is smaller than the sum of its proper divisors (421328238).

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

421101042 is a wasteful number, since it uses less digits than its factorization.

421101042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18937.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 421101042 is about 20520.7466238439. The cubic root of 421101042 is about 749.5410774663.

Adding to 421101042 its reverse (240101124), we get a palindrome (661202166).

The spelling of 421101042 in words is "four hundred twenty-one million, one hundred one thousand, forty-two".