421434040 has 32 divisors (see below), whose sum is σ = 949077360. Its totient is φ = 168422400.

The previous prime is 421434031. The next prime is 421434059. The reversal of 421434040 is 40434124.

It is a congruent number.

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, 47560 + ... + 55720.

Almost surely, 2^421434040 is an apocalyptic number.

421434040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421434040 is an abundant number, since it is smaller than the sum of its proper divisors (527643320).

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

421434040 is a wasteful number, since it uses less digits than its factorization.

421434040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9463 (or 9459 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 421434040 is about 20528.8587115797. The cubic root of 421434040 is about 749.7385992738.

Adding to 421434040 its reverse (40434124), we get a palindrome (461868164).

The spelling of 421434040 in words is "four hundred twenty-one million, four hundred thirty-four thousand, forty".