140819217 has 16 divisors (see below), whose sum is σ = 234089472. Its totient is φ = 73152720.

The previous prime is 140819213. The next prime is 140819219. The reversal of 140819217 is 712918041.

It is not a de Polignac number, because 140819217 - 2² = 140819213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (140819213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304573 + ... + 305034.

It is an arithmetic number, because the mean of its divisors is an integer number (14630592).

Almost surely, 2^140819217 is an apocalyptic number.

It is an amenable number.

140819217 is a deficient number, since it is larger than the sum of its proper divisors (93270255).

140819217 is a wasteful number, since it uses less digits than its factorization.

140819217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609628.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 140819217 is about 11866.7273078975. The cubic root of 140819217 is about 520.2602457186.

The spelling of 140819217 in words is "one hundred forty million, eight hundred nineteen thousand, two hundred seventeen".