140972217 has 8 divisors (see below), whose sum is σ = 188023296. Its totient is φ = 93951312.

The previous prime is 140972213. The next prime is 140972269. The reversal of 140972217 is 712279041.

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

It is not a de Polignac number, because 140972217 - 2² = 140972213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140972213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7848 + ... + 18534.

It is an arithmetic number, because the mean of its divisors is an integer number (23502912).

Almost surely, 2^140972217 is an apocalyptic number.

It is an amenable number.

140972217 is a deficient number, since it is larger than the sum of its proper divisors (47051079).

140972217 is a wasteful number, since it uses less digits than its factorization.

140972217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15087.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 140972217 is about 11873.1721540623. The cubic root of 140972217 is about 520.4485983415.

The spelling of 140972217 in words is "one hundred forty million, nine hundred seventy-two thousand, two hundred seventeen".