1200000432 has 20 divisors (see below), whose sum is σ = 3100001240. Its totient is φ = 400000128.

The previous prime is 1200000419. The next prime is 1200000433. The reversal of 1200000432 is 2340000021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (1200000433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12499957 + ... + 12500052.

It is an arithmetic number, because the mean of its divisors is an integer number (155000062).

Almost surely, 2^1200000432 is an apocalyptic number.

1200000432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200000432 is an abundant number, since it is smaller than the sum of its proper divisors (1900000808).

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

1200000432 is a wasteful number, since it uses less digits than its factorization.

1200000432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25000020 (or 25000014 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 1200000432 is about 34641.0223867599. The cubic root of 1200000432 is about 1062.6586967016.

Adding to 1200000432 its reverse (2340000021), we get a palindrome (3540000453).

The spelling of 1200000432 in words is "one billion, two hundred million, four hundred thirty-two", and thus it is an aban number.