141439905 has 16 divisors (see below), whose sum is σ = 251448960. Its totient is φ = 75434544.

The previous prime is 141439901. The next prime is 141439913. The reversal of 141439905 is 509934141.

It is a happy number.

It is not a de Polignac number, because 141439905 - 2² = 141439901 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 141439905.

It is not an unprimeable number, because it can be changed into a prime (141439901) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 523717 + ... + 523986.

It is an arithmetic number, because the mean of its divisors is an integer number (15715560).

Almost surely, 2^141439905 is an apocalyptic number.

141439905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

141439905 is a deficient number, since it is larger than the sum of its proper divisors (110009055).

141439905 is a wasteful number, since it uses less digits than its factorization.

141439905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047717 (or 1047711 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 141439905 is about 11892.8510038594. The cubic root of 141439905 is about 521.0235080382.

The spelling of 141439905 in words is "one hundred forty-one million, four hundred thirty-nine thousand, nine hundred five".