140918472 has 36 divisors (see below), whose sum is σ = 381927195. Its totient is φ = 46939248.

The previous prime is 140918443. The next prime is 140918483. The reversal of 140918472 is 274819041.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

140918472 is a `hidden beast` number, since 1 + 409 + 184 + 72 = 666.

It can be written as a sum of positive squares in only one way, i.e., 70459236 + 70459236 = 8394^2 + 8394^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8394.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 100029 + ... + 101427.

Almost surely, 2^140918472 is an apocalyptic number.

140918472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

140918472 is an abundant number, since it is smaller than the sum of its proper divisors (241008723).

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

140918472 is an equidigital number, since it uses as much as digits as its factorization.

140918472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2810 (or 1404 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 140918472 is about 11870.9086425598. The cubic root of 140918472 is about 520.3824504013.

It can be divided in two parts, 1409 and 18472, that added together give a square (19881 = 141²).

The spelling of 140918472 in words is "one hundred forty million, nine hundred eighteen thousand, four hundred seventy-two".