140422507 has 2 divisors, whose sum is σ = 140422508. Its totient is φ = 140422506.

The previous prime is 140422489. The next prime is 140422519. The reversal of 140422507 is 705224041.

It is a strong prime.

It is an emirp because it is prime and its reverse (705224041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140422507 is a prime.

It is not a weakly prime, because it can be changed into another prime (140422577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70211253 + 70211254.

It is an arithmetic number, because the mean of its divisors is an integer number (70211254).

Almost surely, 2^140422507 is an apocalyptic number.

140422507 is a deficient number, since it is larger than the sum of its proper divisors (1).

140422507 is an equidigital number, since it uses as much as digits as its factorization.

140422507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 140422507 is about 11850.0002953586. Note that the first 3 decimals coincide. The cubic root of 140422507 is about 519.7712344322.

Adding to 140422507 its reverse (705224041), we get a palindrome (845646548).

The spelling of 140422507 in words is "one hundred forty million, four hundred twenty-two thousand, five hundred seven".