140332538 has 4 divisors (see below), whose sum is σ = 210498810. Its totient is φ = 70166268.

The previous prime is 140332483. The next prime is 140332547. The reversal of 140332538 is 835233041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 835233041 = 911 ⋅916831.

It can be written as a sum of positive squares in only one way, i.e., 116488849 + 23843689 = 10793^2 + 4883^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 140332538.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35083133 + ... + 35083136.

Almost surely, 2^140332538 is an apocalyptic number.

140332538 is a deficient number, since it is larger than the sum of its proper divisors (70166272).

140332538 is an equidigital number, since it uses as much as digits as its factorization.

140332538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70166271.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 140332538 is about 11846.2035268689. The cubic root of 140332538 is about 519.6602045367.

Adding to 140332538 its reverse (835233041), we get a palindrome (975565579).

The spelling of 140332538 in words is "one hundred forty million, three hundred thirty-two thousand, five hundred thirty-eight".