1200232140 has 24 divisors (see below), whose sum is σ = 3360650160. Its totient is φ = 320061888.

The previous prime is 1200232139. The next prime is 1200232141. The reversal of 1200232140 is 412320021.

It is an interprime number because it is at equal distance from previous prime (1200232139) and next prime (1200232141).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1200232141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10001875 + ... + 10001994.

It is an arithmetic number, because the mean of its divisors is an integer number (140027090).

Almost surely, 2^1200232140 is an apocalyptic number.

1200232140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200232140 is an abundant number, since it is smaller than the sum of its proper divisors (2160418020).

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

1200232140 is a wasteful number, since it uses less digits than its factorization.

1200232140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20003881 (or 20003879 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1200232140 is about 34644.3666416345. The cubic root of 1200232140 is about 1062.7270885312.

Adding to 1200232140 its reverse (412320021), we get a palindrome (1612552161).

The spelling of 1200232140 in words is "one billion, two hundred million, two hundred thirty-two thousand, one hundred forty".