140973815 has 4 divisors (see below), whose sum is σ = 169168584. Its totient is φ = 112779048.

The previous prime is 140973803. The next prime is 140973827. The reversal of 140973815 is 518379041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 518379041 = 1361 ⋅380881.

It is an interprime number because it is at equal distance from previous prime (140973803) and next prime (140973827).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140973815 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14097377 + ... + 14097386.

It is an arithmetic number, because the mean of its divisors is an integer number (42292146).

Almost surely, 2^140973815 is an apocalyptic number.

140973815 is a deficient number, since it is larger than the sum of its proper divisors (28194769).

140973815 is an equidigital number, since it uses as much as digits as its factorization.

140973815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28194768.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 140973815 is about 11873.2394484403. The cubic root of 140973815 is about 520.4505648607.

The spelling of 140973815 in words is "one hundred forty million, nine hundred seventy-three thousand, eight hundred fifteen".