140920417 has 16 divisors (see below), whose sum is σ = 158114880. Its totient is φ = 124488000.

The previous prime is 140920411. The next prime is 140920427. The reversal of 140920417 is 714029041.

It is a cyclic number.

It is not a de Polignac number, because 140920417 - 2⁷ = 140920289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140920411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107667 + ... + 108967.

It is an arithmetic number, because the mean of its divisors is an integer number (9882180).

Almost surely, 2^140920417 is an apocalyptic number.

It is an amenable number.

140920417 is a deficient number, since it is larger than the sum of its proper divisors (17194463).

140920417 is a wasteful number, since it uses less digits than its factorization.

140920417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 140920417 is about 11870.9905652393. The cubic root of 140920417 is about 520.3848445497.

Adding to 140920417 its reverse (714029041), we get a palindrome (854949458).

The spelling of 140920417 in words is "one hundred forty million, nine hundred twenty thousand, four hundred seventeen".