421150440 has 32 divisors (see below), whose sum is σ = 1263451680. Its totient is φ = 112306752.

The previous prime is 421150427. The next prime is 421150481. The reversal of 421150440 is 44051124.

It is a happy number.

It is a super-2 number, since 2×421150440² = 354735386224387200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1754674 + ... + 1754913.

It is an arithmetic number, because the mean of its divisors is an integer number (39482865).

Almost surely, 2^421150440 is an apocalyptic number.

421150440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421150440 is an abundant number, since it is smaller than the sum of its proper divisors (842301240).

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

421150440 is a wasteful number, since it uses less digits than its factorization.

421150440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3509601 (or 3509597 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 421150440 is about 20521.9501997252. The cubic root of 421150440 is about 749.5703850661.

The spelling of 421150440 in words is "four hundred twenty-one million, one hundred fifty thousand, four hundred forty".