1240884172 has 12 divisors (see below), whose sum is σ = 2368960776. Its totient is φ = 564038240.

The previous prime is 1240884163. The next prime is 1240884173. The reversal of 1240884172 is 2714880421.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1240884173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14100913 + ... + 14101000.

It is an arithmetic number, because the mean of its divisors is an integer number (197413398).

Almost surely, 2^1240884172 is an apocalyptic number.

It is an amenable number.

1240884172 is a deficient number, since it is larger than the sum of its proper divisors (1128076604).

1240884172 is a wasteful number, since it uses less digits than its factorization.

1240884172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28201928 (or 28201926 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 1240884172 is about 35226.1858849351. The cubic root of 1240884172 is about 1074.5923594496.

It can be divided in two parts, 12408 and 84172, that added together give a triangular number (96580 = T₄₃₉).

The spelling of 1240884172 in words is "one billion, two hundred forty million, eight hundred eighty-four thousand, one hundred seventy-two".