140530154 has 4 divisors (see below), whose sum is σ = 210795234. Its totient is φ = 70265076.

The previous prime is 140530123. The next prime is 140530193. The reversal of 140530154 is 451035041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 137007025 + 3523129 = 11705^2 + 1877^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35132537 + ... + 35132540.

Almost surely, 2^140530154 is an apocalyptic number.

140530154 is a deficient number, since it is larger than the sum of its proper divisors (70265080).

140530154 is an equidigital number, since it uses as much as digits as its factorization.

140530154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70265079.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 140530154 is about 11854.5414926095. The cubic root of 140530154 is about 519.9040182808.

Adding to 140530154 its reverse (451035041), we get a palindrome (591565195).

The spelling of 140530154 in words is "one hundred forty million, five hundred thirty thousand, one hundred fifty-four".