140406253 has 8 divisors (see below), whose sum is σ = 153770400. Its totient is φ = 127408368.

The previous prime is 140406173. The next prime is 140406289. The reversal of 140406253 is 352604041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140406253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140406853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90763 + ... + 92296.

It is an arithmetic number, because the mean of its divisors is an integer number (19221300).

Almost surely, 2^140406253 is an apocalyptic number.

140406253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

140406253 is a deficient number, since it is larger than the sum of its proper divisors (13364147).

140406253 is a wasteful number, since it uses less digits than its factorization.

140406253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183131.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 140406253 is about 11849.3144527437. The cubic root of 140406253 is about 519.7511790346.

The spelling of 140406253 in words is "one hundred forty million, four hundred six thousand, two hundred fifty-three".