140256634 has 16 divisors (see below), whose sum is σ = 241230528. Its totient is φ = 59912352.

The previous prime is 140256619. The next prime is 140256643. The reversal of 140256634 is 436652041.

It is a junction number, because it is equal to n+sod(n) for n = 140256596 and 140256605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12019 + ... + 20614.

It is an arithmetic number, because the mean of its divisors is an integer number (15076908).

Almost surely, 2^140256634 is an apocalyptic number.

140256634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

140256634 is a deficient number, since it is larger than the sum of its proper divisors (100973894).

140256634 is a wasteful number, since it uses less digits than its factorization.

140256634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32949.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 140256634 is about 11842.9993667145. Note that the first 3 decimals coincide. The cubic root of 140256634 is about 519.5664952124.

The spelling of 140256634 in words is "one hundred forty million, two hundred fifty-six thousand, six hundred thirty-four".