1200145215 has 8 divisors (see below), whose sum is σ = 1920232368. Its totient is φ = 640077440.

The previous prime is 1200145211. The next prime is 1200145229. The reversal of 1200145215 is 5125410021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1200145215 - 2² = 1200145211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200145191 and 1200145200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200145211) 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, 40004826 + ... + 40004855.

It is an arithmetic number, because the mean of its divisors is an integer number (240029046).

Almost surely, 2^1200145215 is an apocalyptic number.

1200145215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1200145215 is a deficient number, since it is larger than the sum of its proper divisors (720087153).

1200145215 is an equidigital number, since it uses as much as digits as its factorization.

1200145215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80009689.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1200145215 is about 34643.1120859544. The cubic root of 1200145215 is about 1062.7014324437.

Adding to 1200145215 its reverse (5125410021), we get a palindrome (6325555236).

The spelling of 1200145215 in words is "one billion, two hundred million, one hundred forty-five thousand, two hundred fifteen".