140139154 has 8 divisors (see below), whose sum is σ = 210373488. Its totient is φ = 70014660.

The previous prime is 140139137. The next prime is 140139157. The reversal of 140139154 is 451931041.

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

It is not an unprimeable number, because it can be changed into a prime (140139157) 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, 24192 + ... + 29419.

It is an arithmetic number, because the mean of its divisors is an integer number (26296686).

Almost surely, 2^140139154 is an apocalyptic number.

140139154 is a deficient number, since it is larger than the sum of its proper divisors (70234334).

140139154 is a wasteful number, since it uses less digits than its factorization.

140139154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54920.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 140139154 is about 11838.0384354841. The cubic root of 140139154 is about 519.4213904374.

The spelling of 140139154 in words is "one hundred forty million, one hundred thirty-nine thousand, one hundred fifty-four".