140409043 has 16 divisors (see below), whose sum is σ = 151683840. Its totient is φ = 129625056.

The previous prime is 140409037. The next prime is 140409047. The reversal of 140409043 is 340904041.

It is a happy number.

It is not a de Polignac number, because 140409043 - 2⁹ = 140408531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140408999 and 140409017.

It is not an unprimeable number, because it can be changed into a prime (140409047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117696 + ... + 118882.

It is an arithmetic number, because the mean of its divisors is an integer number (9480240).

Almost surely, 2^140409043 is an apocalyptic number.

140409043 is a deficient number, since it is larger than the sum of its proper divisors (11274797).

140409043 is a wasteful number, since it uses less digits than its factorization.

140409043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 140409043 is about 11849.4321804886. The cubic root of 140409043 is about 519.7546216548.

The spelling of 140409043 in words is "one hundred forty million, four hundred nine thousand, forty-three".