43214040 has 64 divisors (see below), whose sum is σ = 144050400. Its totient is φ = 11523456.

The previous prime is 43214021. The next prime is 43214053. The reversal of 43214040 is 4041234.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18927 + ... + 21086.

Almost surely, 2^43214040 is an apocalyptic number.

43214040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43214040 is an abundant number, since it is smaller than the sum of its proper divisors (100836360).

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

43214040 is a wasteful number, since it uses less digits than its factorization.

43214040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40033 (or 40023 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 43214040 is about 6573.7386622834. The cubic root of 43214040 is about 350.9201366989.

Adding to 43214040 its reverse (4041234), we get a palindrome (47255274).

The spelling of 43214040 in words is "forty-three million, two hundred fourteen thousand, forty".