140420255 has 16 divisors (see below), whose sum is σ = 182217600. Its totient is φ = 103475712.

The previous prime is 140420249. The next prime is 140420261. The reversal of 140420255 is 552024041.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (140420249) and next prime (140420261).

It is a cyclic number.

It is not a de Polignac number, because 140420255 - 2⁴ = 140420239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140420255.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13580 + ... + 21569.

It is an arithmetic number, because the mean of its divisors is an integer number (11388600).

Almost surely, 2^140420255 is an apocalyptic number.

140420255 is a deficient number, since it is larger than the sum of its proper divisors (41797345).

140420255 is a wasteful number, since it uses less digits than its factorization.

140420255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35218.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 140420255 is about 11849.9052738830. The cubic root of 140420255 is about 519.7684558390.

Adding to 140420255 its reverse (552024041), we get a palindrome (692444296).

The spelling of 140420255 in words is "one hundred forty million, four hundred twenty thousand, two hundred fifty-five".