140820403 has 2 divisors, whose sum is σ = 140820404. Its totient is φ = 140820402.

The previous prime is 140820389. The next prime is 140820451. The reversal of 140820403 is 304028041.

It is a weak prime.

It is an emirp because it is prime and its reverse (304028041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140820403 - 2⁵ = 140820371 is a prime.

It is not a weakly prime, because it can be changed into another prime (140820703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70410201 + 70410202.

It is an arithmetic number, because the mean of its divisors is an integer number (70410202).

Almost surely, 2^140820403 is an apocalyptic number.

140820403 is a deficient number, since it is larger than the sum of its proper divisors (1).

140820403 is an equidigital number, since it uses as much as digits as its factorization.

140820403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 140820403 is about 11866.7772794470. Note that the first 3 decimals coincide. The cubic root of 140820403 is about 520.2617062838.

Adding to 140820403 its reverse (304028041), we get a palindrome (444848444).

The spelling of 140820403 in words is "one hundred forty million, eight hundred twenty thousand, four hundred three".