140030851 has 4 divisors (see below), whose sum is σ = 141053112. Its totient is φ = 139008592.

The previous prime is 140030837. The next prime is 140030861. The reversal of 140030851 is 158030041.

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

It is a cyclic number.

It is not a de Polignac number, because 140030851 - 2¹⁵ = 139998083 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140030861) 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, 510925 + ... + 511198.

It is an arithmetic number, because the mean of its divisors is an integer number (35263278).

Almost surely, 2^140030851 is an apocalyptic number.

140030851 is a deficient number, since it is larger than the sum of its proper divisors (1022261).

140030851 is a wasteful number, since it uses less digits than its factorization.

140030851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022260.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 140030851 is about 11833.4631870809. The cubic root of 140030851 is about 519.2875487256.

Adding to 140030851 its reverse (158030041), we get a palindrome (298060892).

The spelling of 140030851 in words is "one hundred forty million, thirty thousand, eight hundred fifty-one".