1200001032 has 48 divisors (see below), whose sum is σ = 3441182940. Its totient is φ = 376470528.

The previous prime is 1200001013. The next prime is 1200001051. The reversal of 1200001032 is 2301000021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1200001013) and next prime (1200001051).

It can be written as a sum of positive squares in 2 ways, for example, as 1193978916 + 6022116 = 34554^2 + 2454^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 488973 + ... + 491420.

Almost surely, 2^1200001032 is an apocalyptic number.

1200001032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200001032 is an abundant number, since it is smaller than the sum of its proper divisors (2241181908).

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

1200001032 is a wasteful number, since it uses less digits than its factorization.

1200001032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980422 (or 980415 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1200001032 is about 34641.0310470113. The cubic root of 1200001032 is about 1062.6588738113.

Adding to 1200001032 its reverse (2301000021), we get a palindrome (3501001053).

The spelling of 1200001032 in words is "one billion, two hundred million, one thousand, thirty-two".