140207407 has 2 divisors, whose sum is σ = 140207408. Its totient is φ = 140207406.

The previous prime is 140207399. The next prime is 140207429. The reversal of 140207407 is 704702041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140207407 - 2³ = 140207399 is a prime.

It is a super-3 number, since 3×140207407³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140207447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70103703 + 70103704.

It is an arithmetic number, because the mean of its divisors is an integer number (70103704).

Almost surely, 2^140207407 is an apocalyptic number.

140207407 is a deficient number, since it is larger than the sum of its proper divisors (1).

140207407 is an equidigital number, since it uses as much as digits as its factorization.

140207407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 140207407 is about 11840.9208679055. The cubic root of 140207407 is about 519.5057026210.

Adding to 140207407 its reverse (704702041), we get a palindrome (844909448).

The spelling of 140207407 in words is "one hundred forty million, two hundred seven thousand, four hundred seven".