140506403 has 2 divisors, whose sum is σ = 140506404. Its totient is φ = 140506402.

The previous prime is 140506397. The next prime is 140506423. The reversal of 140506403 is 304605041.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140506403 - 2¹⁴ = 140490019 is a prime.

It is not a weakly prime, because it can be changed into another prime (140506423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70253201 + 70253202.

It is an arithmetic number, because the mean of its divisors is an integer number (70253202).

Almost surely, 2^140506403 is an apocalyptic number.

140506403 is a deficient number, since it is larger than the sum of its proper divisors (1).

140506403 is an equidigital number, since it uses as much as digits as its factorization.

140506403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 140506403 is about 11853.5396823059. The cubic root of 140506403 is about 519.8747269728.

The spelling of 140506403 in words is "one hundred forty million, five hundred six thousand, four hundred three".