1200055152 has 20 divisors (see below), whose sum is σ = 3100142600. Its totient is φ = 400018368.

The previous prime is 1200055147. The next prime is 1200055187. The reversal of 1200055152 is 2515500021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12500527 + ... + 12500622.

It is an arithmetic number, because the mean of its divisors is an integer number (155007130).

Almost surely, 2^1200055152 is an apocalyptic number.

1200055152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200055152 is an abundant number, since it is smaller than the sum of its proper divisors (1900087448).

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

1200055152 is a wasteful number, since it uses less digits than its factorization.

1200055152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25001160 (or 25001154 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 1200055152 is about 34641.8121927823. The cubic root of 1200055152 is about 1062.6748488625.

Adding to 1200055152 its reverse (2515500021), we get a palindrome (3715555173).

The spelling of 1200055152 in words is "one billion, two hundred million, fifty-five thousand, one hundred fifty-two".