140672138 has 8 divisors (see below), whose sum is σ = 211105440. Its totient is φ = 70303660.

The previous prime is 140672137. The next prime is 140672153. The reversal of 140672138 is 831276041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140672137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10358 + ... + 19713.

It is an arithmetic number, because the mean of its divisors is an integer number (26388180).

Almost surely, 2^140672138 is an apocalyptic number.

140672138 is a deficient number, since it is larger than the sum of its proper divisors (70433302).

140672138 is a wasteful number, since it uses less digits than its factorization.

140672138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32412.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 140672138 is about 11860.5285716953. The cubic root of 140672138 is about 520.0790535630.

The spelling of 140672138 in words is "one hundred forty million, six hundred seventy-two thousand, one hundred thirty-eight".