421155040 has 24 divisors (see below), whose sum is σ = 994979160. Its totient is φ = 168461952.

The previous prime is 421155019. The next prime is 421155061. The reversal of 421155040 is 40551124.

It is an interprime number because it is at equal distance from previous prime (421155019) and next prime (421155061).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1315950 + ... + 1316269.

It is an arithmetic number, because the mean of its divisors is an integer number (41457465).

Almost surely, 2^421155040 is an apocalyptic number.

421155040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421155040 is an abundant number, since it is smaller than the sum of its proper divisors (573824120).

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

421155040 is a wasteful number, since it uses less digits than its factorization.

421155040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2632234 (or 2632226 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 421155040 is about 20522.0622745376. The cubic root of 421155040 is about 749.5731141077.

The spelling of 421155040 in words is "four hundred twenty-one million, one hundred fifty-five thousand, forty".