140123503 has 32 divisors (see below), whose sum is σ = 167311872. Its totient is φ = 116121600.

The previous prime is 140123491. The next prime is 140123509. The reversal of 140123503 is 305321041.

It is a cyclic number.

It is not a de Polignac number, because 140123503 - 2¹⁷ = 139992431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140123509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 774073 + ... + 774253.

It is an arithmetic number, because the mean of its divisors is an integer number (5228496).

Almost surely, 2^140123503 is an apocalyptic number.

140123503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

140123503 is a deficient number, since it is larger than the sum of its proper divisors (27188369).

140123503 is a wasteful number, since it uses less digits than its factorization.

140123503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 140123503 is about 11837.3773700089. The cubic root of 140123503 is about 519.4020530702.

Adding to 140123503 its reverse (305321041), we get a palindrome (445444544).

It can be divided in two parts, 14012 and 3503, that multiplied together give a square (49084036 = 7006²).

The spelling of 140123503 in words is "one hundred forty million, one hundred twenty-three thousand, five hundred three".